The statement describes Newton's first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects reRead more
The statement describes Newton’s first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects resist changes in their state of motion. Newton’s second law of motion, on the other hand, describes the relationship between force, mass, and acceleration. Newton’s third law of motion deals with action and reaction pairs, stating that for every action, there is an equal and opposite reaction. Galileo’s law of motion is not a recognized scientific term. Therefore, the correct answer is [A] Newton’s first law of motion, which succinctly captures the concept of inertia in the absence of external forces.
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depenRead more
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depending on the gravitational field strength. Therefore, mass remains constant, while weight changes with location. This distinction is crucial in physics as it affects how objects behave under different conditions. Option [B] Mass remains constant, while weight is variable accurately describes this difference, aligning with the fundamental principles of physics. Hence, option [C] Both are true is incorrect, as mass is not variable, and weight is not constant. Similarly, option [D] Both are false is also inaccurate, as the statements in option [B] are indeed true.
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional toRead more
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional to the square of the velocity. Acceleration, on the other hand, remains unaffected by changes in velocity unless there’s an external force acting upon the object. Weight, a measure of gravitational force acting on an object’s mass, is unrelated to changes in velocity alone. Therefore, it doesn’t double when velocity doubles. Thus, the correct answer is [C] Kinetic energy quadruples. This relationship between velocity and kinetic energy is fundamental in understanding the dynamics of moving objects and is applicable across various physical scenarios, regardless of specific object characteristics.
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torqueRead more
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torques, the angular velocity must decrease to compensate for the increased moment of inertia. This phenomenon is akin to an ice skater extending their arms to slow down their spin while conserving angular momentum. Hence, the correct answer is [A] Will decrease. This effect is predictable based on fundamental principles of rotational motion and applies universally regardless of specific table or boy characteristics, making the change in angular velocity predictable and consistent.
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standinRead more
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standing, her center of mass rises, lengthening the pendulum and slowing down the swing’s period. This phenomenon is governed by the principle of conservation of energy and the relationship between potential and kinetic energy in a pendulum system. Regardless of the girl’s height, this change in the swing’s dynamics remains consistent. Therefore, the correct answer is [B] increase. The act of standing redistributes her mass, influencing the swing’s rhythm and extending the time taken for each oscillation.
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by rRead more
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by raising a Gudi flag made of a bamboo stick adorned with a bright cloth, neem leaves, and a garlanded sugar candy. Homes are cleaned, rangolis are drawn, and traditional dishes like Puran Poli are prepared. It signifies new beginnings, prosperity, and the triumph of good over evil. Families come together to celebrate, exchange greetings, and seek blessings for a prosperous year ahead.
Alcohols and phenols are classified based on the number of hydroxyl (OH) groups they contain. The number of hydroxyl groups determines whether they are classified as monohydric, dihydric, trihydric, or polyhydric compounds. Monohydric Alcohols and Phenols: Monohydric Alcohols: These contain one hydrRead more
Alcohols and phenols are classified based on the number of hydroxyl (OH) groups they contain. The number of hydroxyl groups determines whether they are classified as monohydric, dihydric, trihydric, or polyhydric compounds.
Monohydric Alcohols and Phenols:
Monohydric Alcohols: These contain one hydroxyl group per molecule. Examples include methanol (CH₃OH) and ethanol (C₂H₅OH).
Monohydric Phenols: These also contain one hydroxyl group per molecule but are specifically associated with an aromatic ring. Phenol (C₆H₅OH) is an example of a monohydric phenol.
Dihydric Alcohols and Phenols:
Dihydric Alcohols: These have two hydroxyl groups in their molecular structure. An example is ethylene glycol (HO-CH₂-CH₂-OH).
Dihydric Phenols: These have two hydroxyl groups and an aromatic ring in their structure. Resorcinol (C₆H₄(OH)₂) is an example of a dihydric phenol.
Trihydric Alcohols:
Trihydric alcohols contain three hydroxyl groups. Glycerol (propane-1,2,3-triol) is a common example (HO-CH₂-CHOH-CH₂-OH).
Polyhydric Alcohols and Phenols:
Alcohols or phenols with more than three hydroxyl groups are classified as polyhydric. An example of a polyhydric alcohol is pentaerythritol, which contains four hydroxyl groups (CHOH)₄.
In summary, the classification is based on the number of hydroxyl groups present in the molecule, ranging from monohydric to polyhydric compounds.
"India Wins Freedom" is the autobiography of Maulana Abul Kalam Azad. Maulana Abul Kalam Azad (1888–1958) was a prominent Indian scholar, freedom fighter, and the first Minister of Education in independent India. In "India Wins Freedom," his autobiography, Azad provides a firsthand account of the stRead more
“India Wins Freedom” is the autobiography of Maulana Abul Kalam Azad.
Maulana Abul Kalam Azad (1888–1958) was a prominent Indian scholar, freedom fighter, and the first Minister of Education in independent India. In “India Wins Freedom,” his autobiography, Azad provides a firsthand account of the struggle for independence, offering insights into his role and the larger freedom movement.
The book "Hindu View of Life" was written by Dr. S. Radhakrishnan. Dr. Sarvepalli Radhakrishnan (1888–1975), an eminent philosopher, statesman, and India's second President, authored "Hindu View of Life." A scholar deeply rooted in Hindu philosophy, he showcased the essence of Hinduism's spiritual aRead more
The book “Hindu View of Life” was written by Dr. S. Radhakrishnan.
Dr. Sarvepalli Radhakrishnan (1888–1975), an eminent philosopher, statesman, and India’s second President, authored “Hindu View of Life.” A scholar deeply rooted in Hindu philosophy, he showcased the essence of Hinduism’s spiritual and ethical principles, contributing significantly to the understanding and appreciation of Indian philosophy globally.
The author of the book "A Soldier's General" is General J. J. Singh. General Joginder Jaswant Singh, commonly known as J. J. Singh, is a retired Indian Army officer who served as the Chief of Army Staff of the Indian Army from 2005 to 2007. Born on September 17, 1945, he has had a distinguished miliRead more
The author of the book “A Soldier’s General” is General J. J. Singh.
General Joginder Jaswant Singh, commonly known as J. J. Singh, is a retired Indian Army officer who served as the Chief of Army Staff of the Indian Army from 2005 to 2007. Born on September 17, 1945, he has had a distinguished military career, and he is also the author of the book “A Soldier’s General.” After his retirement, he has been involved in various public and social activities.
There is no change in the position and direction of any stationary or moving object unless there is an external force acting on it. This is
The statement describes Newton's first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects reRead more
The statement describes Newton’s first law of motion, also known as the law of inertia. It states that an object will remain at rest or continue moving in a straight line at a constant velocity unless acted upon by an external force. This principle highlights the concept of inertia, where objects resist changes in their state of motion. Newton’s second law of motion, on the other hand, describes the relationship between force, mass, and acceleration. Newton’s third law of motion deals with action and reaction pairs, stating that for every action, there is an equal and opposite reaction. Galileo’s law of motion is not a recognized scientific term. Therefore, the correct answer is [A] Newton’s first law of motion, which succinctly captures the concept of inertia in the absence of external forces.
See lessThere is a difference between the mass and weight of a body because
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depenRead more
The difference between the mass and weight of a body lies in their fundamental definitions. Mass refers to the amount of matter in an object and remains constant regardless of location or gravitational field strength. Weight, however, is the force exerted on an object due to gravity and varies depending on the gravitational field strength. Therefore, mass remains constant, while weight changes with location. This distinction is crucial in physics as it affects how objects behave under different conditions. Option [B] Mass remains constant, while weight is variable accurately describes this difference, aligning with the fundamental principles of physics. Hence, option [C] Both are true is incorrect, as mass is not variable, and weight is not constant. Similarly, option [D] Both are false is also inaccurate, as the statements in option [B] are indeed true.
See lessIf the velocity of a moving object is doubled, its
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional toRead more
If the velocity of a moving object is doubled, its kinetic energy quadruples. This phenomenon arises from the kinetic energy formula, which is directly proportional to the square of the velocity. Doubling the velocity results in a fourfold increase in kinetic energy, as the energy is proportional to the square of the velocity. Acceleration, on the other hand, remains unaffected by changes in velocity unless there’s an external force acting upon the object. Weight, a measure of gravitational force acting on an object’s mass, is unrelated to changes in velocity alone. Therefore, it doesn’t double when velocity doubles. Thus, the correct answer is [C] Kinetic energy quadruples. This relationship between velocity and kinetic energy is fundamental in understanding the dynamics of moving objects and is applicable across various physical scenarios, regardless of specific object characteristics.
See lessSuddenly a boy comes and sits on a rotating round table, what will be the effect on the angular velocity of the table?
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torqueRead more
When a boy sits on a rotating round table, the angular velocity of the table will decrease. This change occurs due to the conservation of angular momentum. When the boy adds his mass to the system, the moment of inertia increases. Since angular momentum is conserved in the absence of external torques, the angular velocity must decrease to compensate for the increased moment of inertia. This phenomenon is akin to an ice skater extending their arms to slow down their spin while conserving angular momentum. Hence, the correct answer is [A] Will decrease. This effect is predictable based on fundamental principles of rotational motion and applies universally regardless of specific table or boy characteristics, making the change in angular velocity predictable and consistent.
See lessA girl is swinging on a swing in a sitting position. When the girl stands up, the time period of the oscillations will
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standinRead more
When the girl stands up from swinging in a sitting position, the time period of the oscillations will increase. This change occurs due to alterations in her center of mass. When seated, her center of mass is lower, resulting in a shorter pendulum length and faster oscillations. However, upon standing, her center of mass rises, lengthening the pendulum and slowing down the swing’s period. This phenomenon is governed by the principle of conservation of energy and the relationship between potential and kinetic energy in a pendulum system. Regardless of the girl’s height, this change in the swing’s dynamics remains consistent. Therefore, the correct answer is [B] increase. The act of standing redistributes her mass, influencing the swing’s rhythm and extending the time taken for each oscillation.
See lessWhat is Gudi Padwa?
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by rRead more
Gudi Padwa, also known as Ugadi in some regions, is a Hindu festival celebrated predominantly by the people of Maharashtra, India, marking the beginning of the traditional Hindu lunar calendar. It falls on the first day of the Chaitra month, usually in March or April. The festival is symbolized by raising a Gudi flag made of a bamboo stick adorned with a bright cloth, neem leaves, and a garlanded sugar candy. Homes are cleaned, rangolis are drawn, and traditional dishes like Puran Poli are prepared. It signifies new beginnings, prosperity, and the triumph of good over evil. Families come together to celebrate, exchange greetings, and seek blessings for a prosperous year ahead.
See lessHow are alcohols and phenols classified based on the number of hydroxyl groups they contain?
Alcohols and phenols are classified based on the number of hydroxyl (OH) groups they contain. The number of hydroxyl groups determines whether they are classified as monohydric, dihydric, trihydric, or polyhydric compounds. Monohydric Alcohols and Phenols: Monohydric Alcohols: These contain one hydrRead more
Alcohols and phenols are classified based on the number of hydroxyl (OH) groups they contain. The number of hydroxyl groups determines whether they are classified as monohydric, dihydric, trihydric, or polyhydric compounds.
Monohydric Alcohols and Phenols:
Monohydric Alcohols: These contain one hydroxyl group per molecule. Examples include methanol (CH₃OH) and ethanol (C₂H₅OH).
Monohydric Phenols: These also contain one hydroxyl group per molecule but are specifically associated with an aromatic ring. Phenol (C₆H₅OH) is an example of a monohydric phenol.
Dihydric Alcohols and Phenols:
Dihydric Alcohols: These have two hydroxyl groups in their molecular structure. An example is ethylene glycol (HO-CH₂-CH₂-OH).
Dihydric Phenols: These have two hydroxyl groups and an aromatic ring in their structure. Resorcinol (C₆H₄(OH)₂) is an example of a dihydric phenol.
Trihydric Alcohols:
Trihydric alcohols contain three hydroxyl groups. Glycerol (propane-1,2,3-triol) is a common example (HO-CH₂-CHOH-CH₂-OH).
Polyhydric Alcohols and Phenols:
Alcohols or phenols with more than three hydroxyl groups are classified as polyhydric. An example of a polyhydric alcohol is pentaerythritol, which contains four hydroxyl groups (CHOH)₄.
See lessIn summary, the classification is based on the number of hydroxyl groups present in the molecule, ranging from monohydric to polyhydric compounds.
Whose autobiography is “India Wins Freedom”?
"India Wins Freedom" is the autobiography of Maulana Abul Kalam Azad. Maulana Abul Kalam Azad (1888–1958) was a prominent Indian scholar, freedom fighter, and the first Minister of Education in independent India. In "India Wins Freedom," his autobiography, Azad provides a firsthand account of the stRead more
“India Wins Freedom” is the autobiography of Maulana Abul Kalam Azad.
See lessMaulana Abul Kalam Azad (1888–1958) was a prominent Indian scholar, freedom fighter, and the first Minister of Education in independent India. In “India Wins Freedom,” his autobiography, Azad provides a firsthand account of the struggle for independence, offering insights into his role and the larger freedom movement.
Who has written the book Hindu View of Life?
The book "Hindu View of Life" was written by Dr. S. Radhakrishnan. Dr. Sarvepalli Radhakrishnan (1888–1975), an eminent philosopher, statesman, and India's second President, authored "Hindu View of Life." A scholar deeply rooted in Hindu philosophy, he showcased the essence of Hinduism's spiritual aRead more
The book “Hindu View of Life” was written by Dr. S. Radhakrishnan.
See lessDr. Sarvepalli Radhakrishnan (1888–1975), an eminent philosopher, statesman, and India’s second President, authored “Hindu View of Life.” A scholar deeply rooted in Hindu philosophy, he showcased the essence of Hinduism’s spiritual and ethical principles, contributing significantly to the understanding and appreciation of Indian philosophy globally.
Who is the author of the book A Soldiers General?
The author of the book "A Soldier's General" is General J. J. Singh. General Joginder Jaswant Singh, commonly known as J. J. Singh, is a retired Indian Army officer who served as the Chief of Army Staff of the Indian Army from 2005 to 2007. Born on September 17, 1945, he has had a distinguished miliRead more
The author of the book “A Soldier’s General” is General J. J. Singh.
See lessGeneral Joginder Jaswant Singh, commonly known as J. J. Singh, is a retired Indian Army officer who served as the Chief of Army Staff of the Indian Army from 2005 to 2007. Born on September 17, 1945, he has had a distinguished military career, and he is also the author of the book “A Soldier’s General.” After his retirement, he has been involved in various public and social activities.