The short play "Bharat Durdasha" was written by Bhartendu Harishchandra. He was a renowned Hindi writer, poet, and playwright who played a significant role in the modernization of Hindi literature and theater during the late 19th century. "Bharat Durdasha" was one of his notable works, addressing soRead more
The short play “Bharat Durdasha” was written by Bhartendu Harishchandra. He was a renowned Hindi writer, poet, and playwright who played a significant role in the modernization of Hindi literature and theater during the late 19th century. “Bharat Durdasha” was one of his notable works, addressing social and political issues of the time.
“Bharat Durdasha,” penned in 1875, is a significant short play in Hindi literature, addressing the socio-political milieu of its time. The author, Bhartendu Harishchandra, a key figure in the Hindi literary movement, utilized the play to critique the prevailing issues in India during the late 19th century. The work delves into the challenges faced by the nation, reflecting on social, political, and cultural disparities.
Through nuanced characters and compelling dialogues, Harishchandra portrays a vivid picture of the Indian society’s complexities. The play serves as a poignant commentary on the impact of colonialism, societal inequities, and the need for reform. “Bharat Durdasha” contributes significantly to the literary and theatrical landscape, capturing the essence of a transformative period in Indian history. Its enduring relevance lies in its exploration of issues that transcend time, resonating with audiences and scholars alike, as they reflect on the continuous evolution of the nation.
The author of the book "Gul-e-Nagma" is Muhammad Iqbal. Muhammad Iqbal, also known as Allama Iqbal, was a renowned philosopher, poet, and politician in British India. "Gul-e-Nagma" is a collection of his Urdu poetry.
The author of the book “Gul-e-Nagma” is Muhammad Iqbal. Muhammad Iqbal, also known as Allama Iqbal, was a renowned philosopher, poet, and politician in British India. “Gul-e-Nagma” is a collection of his Urdu poetry.
The famous book "Anand Math" was written by Bankim Chandra Chattopadhyay, a prominent Bengali writer and poet. The novel, published in 1882, is a historical narrative set against the backdrop of the Sannyasi Rebellion in the late 18th century and is known for its patriotic and nationalist themes. BaRead more
The famous book “Anand Math” was written by Bankim Chandra Chattopadhyay, a prominent Bengali writer and poet. The novel, published in 1882, is a historical narrative set against the backdrop of the Sannyasi Rebellion in the late 18th century and is known for its patriotic and nationalist themes.
Bankim Chandra Chattopadhyay (1838–1894) was a pioneering Indian writer and nationalist. Born in Bengal, he served in the British government while expressing strong patriotic sentiments through his literary works. “Anand Math” (1882), a seminal work in Bengali literature, showcases his passion for India’s freedom struggle. The novel, set during the Sannyasi Rebellion, explores the fight against British rule, with the iconic hymn “Vande Mataram” originating from its pages. Chattopadhyay’s writing contributed significantly to the Indian independence movement, earning him recognition as one of the key literary figures in the socio-political landscape of 19th-century India.
"Yashodhara" is a novel written by Indian author Maithili Sharan Gupt. The book was first published in 1927 and is a historical novel that explores the life of Yashodhara, who was the wife of Siddhartha Gautama, the historical Buddha. Maithili Sharan Gupt was a prominent Hindi poet and writer, and "Read more
“Yashodhara” is a novel written by Indian author Maithili Sharan Gupt. The book was first published in 1927 and is a historical novel that explores the life of Yashodhara, who was the wife of Siddhartha Gautama, the historical Buddha. Maithili Sharan Gupt was a prominent Hindi poet and writer, and “Yashodhara” is one of his notable works in prose.
Maithili Sharan Gupt, born on August 3, 1886, was an influential Hindi poet and writer from India. While primarily known for his poetry, he also authored the historical novel “Yashodhara” in 1927, portraying the life of Siddhartha Gautama’s wife. Gupt’s work reflects his versatile literary contributions in both poetry and prose.
Observing a rainbow is a beautiful meteorological phenomenon that occurs under specific conditions. Two essential conditions for observing a rainbow are: Presence of Water Droplets: Rainbows are formed due to the dispersion, reflection, and refraction of sunlight by water droplets in the atmosphere.Read more
Observing a rainbow is a beautiful meteorological phenomenon that occurs under specific conditions. Two essential conditions for observing a rainbow are:
Presence of Water Droplets: Rainbows are formed due to the dispersion, reflection, and refraction of sunlight by water droplets in the atmosphere. The most common source of water droplets for rainbow formation is rain. The raindrops act as prisms, separating sunlight into its component colors and creating the characteristic spectrum of colors in a rainbow.
Position of the Observer in Relation to the Sun and Rain: The observer must be positioned with the sun at their back and rain or water droplets in front of them. Rainbows are always observed in the direction opposite to the sun, forming a circle centered on the antisolar point. The sunlight enters the raindrops, undergoes internal reflection and refraction, and then exits the raindrops, creating the spectrum of colors that we see as a rainbow.
Therefore, for the best chance of observing a rainbow, one should be positioned with the sun behind them and rain or water droplets in front of them, creating the necessary conditions for the dispersion and reflection of sunlight by water droplets to form a colourful arc in the sky.
The inability of a normal eye to see objects clearly when they are placed closer than 25 cm is due to the physiological limitation known as the near point. The near point is the closest point to the eye at which an object can be brought into focus, and it is generally around 25 cm for a normal, emmeRead more
The inability of a normal eye to see objects clearly when they are placed closer than 25 cm is due to the physiological limitation known as the near point. The near point is the closest point to the eye at which an object can be brought into focus, and it is generally around 25 cm for a normal, emmetropic (non-presbyopic) eye.
The primary reason for this limitation is the inability of the eye’s lens to adjust its focal length sufficiently to bring close objects into sharp focus. The lens of the eye can change its shape through a process called accommodation, controlled by the ciliary muscles. When the ciliary muscles contract, the lens becomes more convex, increasing its refractive power for focusing on nearby objects.
However, there is a limit to the extent of accommodation. As an object is brought closer to the eye, the ciliary muscles contract to increase the curvature of the lens, but there comes a point where the lens cannot adjust any further. Beyond this point, the light rays from a close object converge too much, and the image is formed behind the retina instead of directly on it. As a result, the image appears blurred.
The near point represents the minimum distance at which the lens can focus light properly on the retina. Beyond the near point, the eye requires additional optical assistance (such as reading glasses) to converge light properly and form a clear image on the retina.
If we say in overall, the inability of a normal eye to see objects clearly when placed closer than 25 cm is due to the limited accommodation range of the eye’s lens, which prevents it from adjusting sufficiently to focus on objects at very close distances.
a) The person is suffering from the defect of vision known as myopia or nearsightedness. b) Two possible causes of myopia include: • Excessive elongation of the eyeball: In myopia, the eyeball is too long from front to back, causing light to focus in front of the retina rather than directly on it. •Read more
a) The person is suffering from the defect of vision known as myopia or nearsightedness.
b) Two possible causes of myopia include:
• Excessive elongation of the eyeball: In myopia, the eyeball is too long from front to back, causing light to focus in front of the retina rather than directly on it.
• Increased curvature of the cornea or lens: Sometimes, myopia can be caused by an increased curvature of the cornea or lens, leading to the improper focusing of light.
c) To calculate the power of the lens needed to correct the myopic vision, we can use the lens formula:
Given, u = – 25 cm, v = -75 cm, f = ?
1/f = 1/v – 1/u
F = 37.5
P = 100/f
= + 2.67 D
(i) The hormone that is commonly secreted into the blood when an individual is under stress is cortisol. Cortisol is a steroid hormone that belongs to the glucocorticoid class and is produced by the adrenal glands. (ii) Cortisol plays a crucial role in helping the body cope with emergency or stressfRead more
(i) The hormone that is commonly secreted into the blood when an individual is under stress is cortisol. Cortisol is a steroid hormone that belongs to the glucocorticoid class and is produced by the adrenal glands.
(ii) Cortisol plays a crucial role in helping the body cope with emergency or stressful situations through the following mechanisms:
1. Energy Release: Cortisol promotes the breakdown of glycogen (stored in the liver) into glucose. This process, known as glycogenolysis, increases the availability of glucose in the bloodstream. This elevated glucose level provides a quick and readily available source of energy for the body’s cells, especially in situations where increased energy is needed, such as during the “fight or flight” response to stress.
2. Protein and Fat Metabolism: Cortisol stimulates the breakdown of proteins into amino acids and fats into fatty acids. The resulting amino acids can be used for energy production, and fatty acids can be utilized for additional energy needs.
3. Anti-inflammatory Action: Cortisol has anti-inflammatory properties. In stressful situations, the body may experience inflammation as part of the stress response. Cortisol helps to suppress the immune system’s inflammatory response, reducing the potential for excessive inflammation.
4. Suppression of Non-Essential Functions: Cortisol helps to redirect the body’s resources towards functions that are essential for immediate survival. It can suppress non-essential functions, such as the reproductive and immune systems, temporarily prioritizing resources for dealing with the stressor at hand.
5. Maintenance of Blood Pressure: Cortisol supports blood vessel constriction, which helps to maintain blood pressure during stressful situations. This is important for ensuring an adequate blood supply to vital organs and tissues.
While cortisol is beneficial in the short term for coping with acute stress, chronic or prolonged elevation of cortisol levels due to ongoing stress can have negative effects on health. It is important for the body’s stress response to return to baseline levels once the stressor has been resolved to maintain overall well-being. Chronic stress and prolonged elevation of cortisol can contribute to various health issues, including metabolic disorders, immune system suppression, and cardiovascular problems.
(i) It turns yellow due to formation of lead oxide and Reddish-brown fumes evolve. (ii) Thermal decomposition reaction. (iii) 2Pb(NO3)2 + Heat → 2PbO + 4NO2 + O2.
(i) It turns yellow due to formation of lead oxide and Reddish-brown fumes evolve.
(ii) Thermal decomposition reaction.
(iii) 2Pb(NO3)2 + Heat → 2PbO + 4NO2 + O2.
Catenation: The property of self-linking of atoms of an element through covalent bonds in order to form straight chain, branched chains or cyclic chains of different sizes is called catenation. The valency of an element first increases and then decreases across a period. Like it...👍
Catenation: The property of self-linking of atoms of an element through covalent bonds in order to form straight chain, branched chains or cyclic chains of different sizes is called catenation.
The valency of an element first increases and then decreases across a period.
The author of the book ‘Bharat Durdsha’ is –
The short play "Bharat Durdasha" was written by Bhartendu Harishchandra. He was a renowned Hindi writer, poet, and playwright who played a significant role in the modernization of Hindi literature and theater during the late 19th century. "Bharat Durdasha" was one of his notable works, addressing soRead more
The short play “Bharat Durdasha” was written by Bhartendu Harishchandra. He was a renowned Hindi writer, poet, and playwright who played a significant role in the modernization of Hindi literature and theater during the late 19th century. “Bharat Durdasha” was one of his notable works, addressing social and political issues of the time.
“Bharat Durdasha,” penned in 1875, is a significant short play in Hindi literature, addressing the socio-political milieu of its time. The author, Bhartendu Harishchandra, a key figure in the Hindi literary movement, utilized the play to critique the prevailing issues in India during the late 19th century. The work delves into the challenges faced by the nation, reflecting on social, political, and cultural disparities.
Through nuanced characters and compelling dialogues, Harishchandra portrays a vivid picture of the Indian society’s complexities. The play serves as a poignant commentary on the impact of colonialism, societal inequities, and the need for reform. “Bharat Durdasha” contributes significantly to the literary and theatrical landscape, capturing the essence of a transformative period in Indian history. Its enduring relevance lies in its exploration of issues that transcend time, resonating with audiences and scholars alike, as they reflect on the continuous evolution of the nation.
See lessWho is the author of the book ‘Gul-e-Nagma’?
The author of the book "Gul-e-Nagma" is Muhammad Iqbal. Muhammad Iqbal, also known as Allama Iqbal, was a renowned philosopher, poet, and politician in British India. "Gul-e-Nagma" is a collection of his Urdu poetry.
The author of the book “Gul-e-Nagma” is Muhammad Iqbal. Muhammad Iqbal, also known as Allama Iqbal, was a renowned philosopher, poet, and politician in British India. “Gul-e-Nagma” is a collection of his Urdu poetry.
See less. Who is the author of the famous book ‘Anand Math’?
The famous book "Anand Math" was written by Bankim Chandra Chattopadhyay, a prominent Bengali writer and poet. The novel, published in 1882, is a historical narrative set against the backdrop of the Sannyasi Rebellion in the late 18th century and is known for its patriotic and nationalist themes. BaRead more
The famous book “Anand Math” was written by Bankim Chandra Chattopadhyay, a prominent Bengali writer and poet. The novel, published in 1882, is a historical narrative set against the backdrop of the Sannyasi Rebellion in the late 18th century and is known for its patriotic and nationalist themes.
Bankim Chandra Chattopadhyay (1838–1894) was a pioneering Indian writer and nationalist. Born in Bengal, he served in the British government while expressing strong patriotic sentiments through his literary works. “Anand Math” (1882), a seminal work in Bengali literature, showcases his passion for India’s freedom struggle. The novel, set during the Sannyasi Rebellion, explores the fight against British rule, with the iconic hymn “Vande Mataram” originating from its pages. Chattopadhyay’s writing contributed significantly to the Indian independence movement, earning him recognition as one of the key literary figures in the socio-political landscape of 19th-century India.
See lessWhose creation is ‘Yashodhara’?
"Yashodhara" is a novel written by Indian author Maithili Sharan Gupt. The book was first published in 1927 and is a historical novel that explores the life of Yashodhara, who was the wife of Siddhartha Gautama, the historical Buddha. Maithili Sharan Gupt was a prominent Hindi poet and writer, and "Read more
“Yashodhara” is a novel written by Indian author Maithili Sharan Gupt. The book was first published in 1927 and is a historical novel that explores the life of Yashodhara, who was the wife of Siddhartha Gautama, the historical Buddha. Maithili Sharan Gupt was a prominent Hindi poet and writer, and “Yashodhara” is one of his notable works in prose.
Maithili Sharan Gupt, born on August 3, 1886, was an influential Hindi poet and writer from India. While primarily known for his poetry, he also authored the historical novel “Yashodhara” in 1927, portraying the life of Siddhartha Gautama’s wife. Gupt’s work reflects his versatile literary contributions in both poetry and prose.
See lessList two essential conditions for observing a rainbow.
Observing a rainbow is a beautiful meteorological phenomenon that occurs under specific conditions. Two essential conditions for observing a rainbow are: Presence of Water Droplets: Rainbows are formed due to the dispersion, reflection, and refraction of sunlight by water droplets in the atmosphere.Read more
Observing a rainbow is a beautiful meteorological phenomenon that occurs under specific conditions. Two essential conditions for observing a rainbow are:
Presence of Water Droplets: Rainbows are formed due to the dispersion, reflection, and refraction of sunlight by water droplets in the atmosphere. The most common source of water droplets for rainbow formation is rain. The raindrops act as prisms, separating sunlight into its component colors and creating the characteristic spectrum of colors in a rainbow.
Position of the Observer in Relation to the Sun and Rain: The observer must be positioned with the sun at their back and rain or water droplets in front of them. Rainbows are always observed in the direction opposite to the sun, forming a circle centered on the antisolar point. The sunlight enters the raindrops, undergoes internal reflection and refraction, and then exits the raindrops, creating the spectrum of colors that we see as a rainbow.
Therefore, for the best chance of observing a rainbow, one should be positioned with the sun behind them and rain or water droplets in front of them, creating the necessary conditions for the dispersion and reflection of sunlight by water droplets to form a colourful arc in the sky.
See lessWhy is a normal eye not able to see clearly the objects placed closer than 25 cm?
The inability of a normal eye to see objects clearly when they are placed closer than 25 cm is due to the physiological limitation known as the near point. The near point is the closest point to the eye at which an object can be brought into focus, and it is generally around 25 cm for a normal, emmeRead more
The inability of a normal eye to see objects clearly when they are placed closer than 25 cm is due to the physiological limitation known as the near point. The near point is the closest point to the eye at which an object can be brought into focus, and it is generally around 25 cm for a normal, emmetropic (non-presbyopic) eye.
The primary reason for this limitation is the inability of the eye’s lens to adjust its focal length sufficiently to bring close objects into sharp focus. The lens of the eye can change its shape through a process called accommodation, controlled by the ciliary muscles. When the ciliary muscles contract, the lens becomes more convex, increasing its refractive power for focusing on nearby objects.
However, there is a limit to the extent of accommodation. As an object is brought closer to the eye, the ciliary muscles contract to increase the curvature of the lens, but there comes a point where the lens cannot adjust any further. Beyond this point, the light rays from a close object converge too much, and the image is formed behind the retina instead of directly on it. As a result, the image appears blurred.
The near point represents the minimum distance at which the lens can focus light properly on the retina. Beyond the near point, the eye requires additional optical assistance (such as reading glasses) to converge light properly and form a clear image on the retina.
If we say in overall, the inability of a normal eye to see objects clearly when placed closer than 25 cm is due to the limited accommodation range of the eye’s lens, which prevents it from adjusting sufficiently to focus on objects at very close distances.
See lessA person is unable to see objects distinctly placed within 75 cm from his eyes. a) Name the defect of vision the person is suffering from. b) List its two possible causes. c) Calculate the power of the lens needed to correct this defect. Assume that the near point for the normal eye is 25 cm.
a) The person is suffering from the defect of vision known as myopia or nearsightedness. b) Two possible causes of myopia include: • Excessive elongation of the eyeball: In myopia, the eyeball is too long from front to back, causing light to focus in front of the retina rather than directly on it. •Read more
a) The person is suffering from the defect of vision known as myopia or nearsightedness.
b) Two possible causes of myopia include:
• Excessive elongation of the eyeball: In myopia, the eyeball is too long from front to back, causing light to focus in front of the retina rather than directly on it.
• Increased curvature of the cornea or lens: Sometimes, myopia can be caused by an increased curvature of the cornea or lens, leading to the improper focusing of light.
c) To calculate the power of the lens needed to correct the myopic vision, we can use the lens formula:
See lessGiven, u = – 25 cm, v = -75 cm, f = ?
1/f = 1/v – 1/u
F = 37.5
P = 100/f
= + 2.67 D
Which hormone is secreted into the blood when you are under stress? Name the gland that secretes this hormone. ii) How does it help the body to cope up in an emergency situation?
(i) The hormone that is commonly secreted into the blood when an individual is under stress is cortisol. Cortisol is a steroid hormone that belongs to the glucocorticoid class and is produced by the adrenal glands. (ii) Cortisol plays a crucial role in helping the body cope with emergency or stressfRead more
(i) The hormone that is commonly secreted into the blood when an individual is under stress is cortisol. Cortisol is a steroid hormone that belongs to the glucocorticoid class and is produced by the adrenal glands.
(ii) Cortisol plays a crucial role in helping the body cope with emergency or stressful situations through the following mechanisms:
1. Energy Release: Cortisol promotes the breakdown of glycogen (stored in the liver) into glucose. This process, known as glycogenolysis, increases the availability of glucose in the bloodstream. This elevated glucose level provides a quick and readily available source of energy for the body’s cells, especially in situations where increased energy is needed, such as during the “fight or flight” response to stress.
2. Protein and Fat Metabolism: Cortisol stimulates the breakdown of proteins into amino acids and fats into fatty acids. The resulting amino acids can be used for energy production, and fatty acids can be utilized for additional energy needs.
3. Anti-inflammatory Action: Cortisol has anti-inflammatory properties. In stressful situations, the body may experience inflammation as part of the stress response. Cortisol helps to suppress the immune system’s inflammatory response, reducing the potential for excessive inflammation.
4. Suppression of Non-Essential Functions: Cortisol helps to redirect the body’s resources towards functions that are essential for immediate survival. It can suppress non-essential functions, such as the reproductive and immune systems, temporarily prioritizing resources for dealing with the stressor at hand.
5. Maintenance of Blood Pressure: Cortisol supports blood vessel constriction, which helps to maintain blood pressure during stressful situations. This is important for ensuring an adequate blood supply to vital organs and tissues.
While cortisol is beneficial in the short term for coping with acute stress, chronic or prolonged elevation of cortisol levels due to ongoing stress can have negative effects on health. It is important for the body’s stress response to return to baseline levels once the stressor has been resolved to maintain overall well-being. Chronic stress and prolonged elevation of cortisol can contribute to various health issues, including metabolic disorders, immune system suppression, and cardiovascular problems.
See less(i) Write two observations when lead nitrate is heated in a test tube. (ii) Name the type of reaction. (iii) Write a balanced chemical equation to represent the above reaction.
(i) It turns yellow due to formation of lead oxide and Reddish-brown fumes evolve. (ii) Thermal decomposition reaction. (iii) 2Pb(NO3)2 + Heat → 2PbO + 4NO2 + O2.
(i) It turns yellow due to formation of lead oxide and Reddish-brown fumes evolve.
See less(ii) Thermal decomposition reaction.
(iii) 2Pb(NO3)2 + Heat → 2PbO + 4NO2 + O2.
Define catenation. How does valency of an element vary across a period?
Catenation: The property of self-linking of atoms of an element through covalent bonds in order to form straight chain, branched chains or cyclic chains of different sizes is called catenation. The valency of an element first increases and then decreases across a period. Like it...👍
Catenation: The property of self-linking of atoms of an element through covalent bonds in order to form straight chain, branched chains or cyclic chains of different sizes is called catenation.
The valency of an element first increases and then decreases across a period.
Like it…👍
See less