In a rainbow, purple (A) is dispersed more. This is due to the phenomenon of dispersion, where different wavelengths of light refract at slightly different angles when passing through water droplets. Purple light, having a shorter wavelength, bends more than other colors such as red (which has a lonRead more
In a rainbow, purple (A) is dispersed more. This is due to the phenomenon of dispersion, where different wavelengths of light refract at slightly different angles when passing through water droplets. Purple light, having a shorter wavelength, bends more than other colors such as red (which has a longer wavelength). As a result, purple light is spread out more than the other colors, causing it to appear on the inner edge of the rainbow. The degree of bending, or refraction, increases with decreasing wavelength, which is why purple, being at the shorter end of the visible spectrum, is dispersed the most. This dispersion results in the separation of light into its constituent colors, creating the spectrum of a rainbow with purple on the inner edge and red on the outer edge.
The red color in the sky at sunrise and sunset is caused by scattering (C). When the sun is near the horizon, its light has to pass through a thicker layer of the Earth's atmosphere. This increased distance causes more scattering of shorter wavelengths (blue and violet) by air molecules and particleRead more
The red color in the sky at sunrise and sunset is caused by scattering (C). When the sun is near the horizon, its light has to pass through a thicker layer of the Earth’s atmosphere. This increased distance causes more scattering of shorter wavelengths (blue and violet) by air molecules and particles. As a result, the shorter wavelengths are scattered out of the direct line of sight, and the longer wavelengths (red and orange) become more prominent. This effect, known as Rayleigh scattering, is responsible for the reddish hues observed during these times of the day. The phenomenon is more pronounced when there are particles like dust or pollution in the atmosphere, enhancing the scattering and intensifying the red and orange colors.
The heat required to convert a substance from liquid to gas without any change in temperature is known as the latent heat of vaporization. This energy is absorbed by the substance during the phase transition from liquid to gas at its boiling point. At this point, the substance absorbs energy to overRead more
The heat required to convert a substance from liquid to gas without any change in temperature is known as the latent heat of vaporization. This energy is absorbed by the substance during the phase transition from liquid to gas at its boiling point. At this point, the substance absorbs energy to overcome intermolecular forces holding the liquid molecules together, allowing them to enter the gas phase.
The latent heat of vaporization is a critical concept in understanding processes such as boiling, where liquid turns into vapor. It is essential in various applications, including cooking, distillation, and climate science. Different substances have different latent heats of vaporization, depending on their molecular properties and intermolecular forces.
Therefore, the correct answer is [D] Vaporization, as it specifically refers to the phase transition from liquid to gas, accompanied by the absorption of heat energy without a change in temperature.
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K - 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answerRead more
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K – 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answer is [B] 27 °C.
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air's ability to retain water vapor increases, causing the relatiRead more
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air’s ability to retain water vapor increases, causing the relative humidity to drop unless there is a corresponding increase in the absolute humidity (amount of water vapor in the air).
However, if there is no significant change in the moisture content of the air, the relative humidity will decrease due to the relative relationship between the actual water vapor content and the maximum possible water vapor content at the new, higher temperature. Therefore, in most cases, a sudden increase in temperature leads to a decrease in relative humidity, making [B] Decreases the correct answer.
Which colour is dispersed more in rainbow?
In a rainbow, purple (A) is dispersed more. This is due to the phenomenon of dispersion, where different wavelengths of light refract at slightly different angles when passing through water droplets. Purple light, having a shorter wavelength, bends more than other colors such as red (which has a lonRead more
In a rainbow, purple (A) is dispersed more. This is due to the phenomenon of dispersion, where different wavelengths of light refract at slightly different angles when passing through water droplets. Purple light, having a shorter wavelength, bends more than other colors such as red (which has a longer wavelength). As a result, purple light is spread out more than the other colors, causing it to appear on the inner edge of the rainbow. The degree of bending, or refraction, increases with decreasing wavelength, which is why purple, being at the shorter end of the visible spectrum, is dispersed the most. This dispersion results in the separation of light into its constituent colors, creating the spectrum of a rainbow with purple on the inner edge and red on the outer edge.
See lessWhat causes the red colour in the sky at the time of sunrise and sunset?
The red color in the sky at sunrise and sunset is caused by scattering (C). When the sun is near the horizon, its light has to pass through a thicker layer of the Earth's atmosphere. This increased distance causes more scattering of shorter wavelengths (blue and violet) by air molecules and particleRead more
The red color in the sky at sunrise and sunset is caused by scattering (C). When the sun is near the horizon, its light has to pass through a thicker layer of the Earth’s atmosphere. This increased distance causes more scattering of shorter wavelengths (blue and violet) by air molecules and particles. As a result, the shorter wavelengths are scattered out of the direct line of sight, and the longer wavelengths (red and orange) become more prominent. This effect, known as Rayleigh scattering, is responsible for the reddish hues observed during these times of the day. The phenomenon is more pronounced when there are particles like dust or pollution in the atmosphere, enhancing the scattering and intensifying the red and orange colors.
See lessThe heat required to convert a substance from liquid to gas without any temperature change is called latent heat of?
The heat required to convert a substance from liquid to gas without any change in temperature is known as the latent heat of vaporization. This energy is absorbed by the substance during the phase transition from liquid to gas at its boiling point. At this point, the substance absorbs energy to overRead more
The heat required to convert a substance from liquid to gas without any change in temperature is known as the latent heat of vaporization. This energy is absorbed by the substance during the phase transition from liquid to gas at its boiling point. At this point, the substance absorbs energy to overcome intermolecular forces holding the liquid molecules together, allowing them to enter the gas phase.
The latent heat of vaporization is a critical concept in understanding processes such as boiling, where liquid turns into vapor. It is essential in various applications, including cooking, distillation, and climate science. Different substances have different latent heats of vaporization, depending on their molecular properties and intermolecular forces.
Therefore, the correct answer is [D] Vaporization, as it specifically refers to the phase transition from liquid to gas, accompanied by the absorption of heat energy without a change in temperature.
See lessWhich temperature measured in Celsius is equal to 300 K?
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K - 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answerRead more
To convert from Kelvin (K) to Celsius (°C), you subtract 273.15 from the temperature in Kelvin. Therefore, 300 K – 273.15 = 26.85 °C. Since Celsius temperature is often rounded to the nearest whole number, 26.85 °C is approximately 27 °C. Hence, 300 K is equal to 27 °C. Therefore, the correct answer is [B] 27 °C.
See lessIf there is a sudden increase in the temperature of a place, then the relative humidity
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air's ability to retain water vapor increases, causing the relatiRead more
When there is a sudden increase in temperature at a place, the relative humidity typically decreases. This decrease occurs because warmer air has a higher capacity to hold moisture compared to cooler air. As the temperature rises, the air’s ability to retain water vapor increases, causing the relative humidity to drop unless there is a corresponding increase in the absolute humidity (amount of water vapor in the air).
However, if there is no significant change in the moisture content of the air, the relative humidity will decrease due to the relative relationship between the actual water vapor content and the maximum possible water vapor content at the new, higher temperature. Therefore, in most cases, a sudden increase in temperature leads to a decrease in relative humidity, making [B] Decreases the correct answer.
See less