146455
Which of the following devices is used for detecting thermal radiations?
1 Thermopile
2 Liquid thermometer
3 Platinum resistance thermometer
4 Constant volume thermometer
Explanation:
A A thermopile is a sensitive instrument, used for detection of heat radiation and measurement of their intensity.
WB JEE-2007
Thermal Properties of Matter
146472
Which of the following is close to an ideal black body?
1 Black lamp
2 Cavity maintained at constant temperature
3 Platinum black
4 A lamp of charcoal heated to high temperature
Explanation:
B An ideal black body is one which absorbs all the incident radiation without reflecting or transmitting any part of it. Black lamp absorbs approximately 96\% of incident radiation. An ideal black body can be realized in practice by a small hole in the wall of a hollow body which is at constant temperature.
AIPMT-2002
Thermal Properties of Matter
146481
Three stars $A, B, C$ have surface temperatures $\mathbf{T}_{A}, \mathbf{T}_{B}, \mathbf{T}_{C}$ respectively. Star A appears bluish, start $B$ appears reddish and star $C$ yellowish. Hence
D The appearance of a star depends on the wavelength $\left(\lambda_{\mathrm{m}}\right)$ at which it radiates maximum energy. This depends inversely on the surface temperature (T) of the star. Now, $\lambda_{\text {blue }} \lt \lambda_{\text {yellow }} \lt \lambda_{\text {red. }}$ Thus, star A (bluish) radiates the shortest $\lambda$ and must be at the highest temperature, while star B (reddish) must be at the lowest temperature.
NEET Odisha-2020
Thermal Properties of Matter
146482
Liquid oxygen at $50 \mathrm{~K}$ is heated to $300 \mathrm{~K}$ at constant pressure of $1 \mathrm{~atm}$. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?
1
2
3
4
Explanation:
A If the first phase temperature of liquid $\mathrm{O}_{2}$ will increase as initially. It is at $50 \mathrm{~K}$ which is in liquid state for oxygen. The second phase when liquid oxygen changes to gas, temperature remain constant. In the third phase, the temperature of oxygen in gaseous state will further increase.
AIPMT-2012
Thermal Properties of Matter
146485
Mercury thermometer can be used to measure temperature upto
1 $260^{\circ} \mathrm{C}$
2 $100^{\circ} \mathrm{C}$
3 $360^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Explanation:
C Mercury thermometers are used in measurement because mercury is the only metal that is in liquid state at room temperature. Mercury is used in thermometers it can measure temperature over a wide range. The Lower limit being $-37^{\circ} \mathrm{C}$ and the upper limit being $357^{\circ} \mathrm{C}$
146455
Which of the following devices is used for detecting thermal radiations?
1 Thermopile
2 Liquid thermometer
3 Platinum resistance thermometer
4 Constant volume thermometer
Explanation:
A A thermopile is a sensitive instrument, used for detection of heat radiation and measurement of their intensity.
WB JEE-2007
Thermal Properties of Matter
146472
Which of the following is close to an ideal black body?
1 Black lamp
2 Cavity maintained at constant temperature
3 Platinum black
4 A lamp of charcoal heated to high temperature
Explanation:
B An ideal black body is one which absorbs all the incident radiation without reflecting or transmitting any part of it. Black lamp absorbs approximately 96\% of incident radiation. An ideal black body can be realized in practice by a small hole in the wall of a hollow body which is at constant temperature.
AIPMT-2002
Thermal Properties of Matter
146481
Three stars $A, B, C$ have surface temperatures $\mathbf{T}_{A}, \mathbf{T}_{B}, \mathbf{T}_{C}$ respectively. Star A appears bluish, start $B$ appears reddish and star $C$ yellowish. Hence
D The appearance of a star depends on the wavelength $\left(\lambda_{\mathrm{m}}\right)$ at which it radiates maximum energy. This depends inversely on the surface temperature (T) of the star. Now, $\lambda_{\text {blue }} \lt \lambda_{\text {yellow }} \lt \lambda_{\text {red. }}$ Thus, star A (bluish) radiates the shortest $\lambda$ and must be at the highest temperature, while star B (reddish) must be at the lowest temperature.
NEET Odisha-2020
Thermal Properties of Matter
146482
Liquid oxygen at $50 \mathrm{~K}$ is heated to $300 \mathrm{~K}$ at constant pressure of $1 \mathrm{~atm}$. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?
1
2
3
4
Explanation:
A If the first phase temperature of liquid $\mathrm{O}_{2}$ will increase as initially. It is at $50 \mathrm{~K}$ which is in liquid state for oxygen. The second phase when liquid oxygen changes to gas, temperature remain constant. In the third phase, the temperature of oxygen in gaseous state will further increase.
AIPMT-2012
Thermal Properties of Matter
146485
Mercury thermometer can be used to measure temperature upto
1 $260^{\circ} \mathrm{C}$
2 $100^{\circ} \mathrm{C}$
3 $360^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Explanation:
C Mercury thermometers are used in measurement because mercury is the only metal that is in liquid state at room temperature. Mercury is used in thermometers it can measure temperature over a wide range. The Lower limit being $-37^{\circ} \mathrm{C}$ and the upper limit being $357^{\circ} \mathrm{C}$
146455
Which of the following devices is used for detecting thermal radiations?
1 Thermopile
2 Liquid thermometer
3 Platinum resistance thermometer
4 Constant volume thermometer
Explanation:
A A thermopile is a sensitive instrument, used for detection of heat radiation and measurement of their intensity.
WB JEE-2007
Thermal Properties of Matter
146472
Which of the following is close to an ideal black body?
1 Black lamp
2 Cavity maintained at constant temperature
3 Platinum black
4 A lamp of charcoal heated to high temperature
Explanation:
B An ideal black body is one which absorbs all the incident radiation without reflecting or transmitting any part of it. Black lamp absorbs approximately 96\% of incident radiation. An ideal black body can be realized in practice by a small hole in the wall of a hollow body which is at constant temperature.
AIPMT-2002
Thermal Properties of Matter
146481
Three stars $A, B, C$ have surface temperatures $\mathbf{T}_{A}, \mathbf{T}_{B}, \mathbf{T}_{C}$ respectively. Star A appears bluish, start $B$ appears reddish and star $C$ yellowish. Hence
D The appearance of a star depends on the wavelength $\left(\lambda_{\mathrm{m}}\right)$ at which it radiates maximum energy. This depends inversely on the surface temperature (T) of the star. Now, $\lambda_{\text {blue }} \lt \lambda_{\text {yellow }} \lt \lambda_{\text {red. }}$ Thus, star A (bluish) radiates the shortest $\lambda$ and must be at the highest temperature, while star B (reddish) must be at the lowest temperature.
NEET Odisha-2020
Thermal Properties of Matter
146482
Liquid oxygen at $50 \mathrm{~K}$ is heated to $300 \mathrm{~K}$ at constant pressure of $1 \mathrm{~atm}$. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?
1
2
3
4
Explanation:
A If the first phase temperature of liquid $\mathrm{O}_{2}$ will increase as initially. It is at $50 \mathrm{~K}$ which is in liquid state for oxygen. The second phase when liquid oxygen changes to gas, temperature remain constant. In the third phase, the temperature of oxygen in gaseous state will further increase.
AIPMT-2012
Thermal Properties of Matter
146485
Mercury thermometer can be used to measure temperature upto
1 $260^{\circ} \mathrm{C}$
2 $100^{\circ} \mathrm{C}$
3 $360^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Explanation:
C Mercury thermometers are used in measurement because mercury is the only metal that is in liquid state at room temperature. Mercury is used in thermometers it can measure temperature over a wide range. The Lower limit being $-37^{\circ} \mathrm{C}$ and the upper limit being $357^{\circ} \mathrm{C}$
146455
Which of the following devices is used for detecting thermal radiations?
1 Thermopile
2 Liquid thermometer
3 Platinum resistance thermometer
4 Constant volume thermometer
Explanation:
A A thermopile is a sensitive instrument, used for detection of heat radiation and measurement of their intensity.
WB JEE-2007
Thermal Properties of Matter
146472
Which of the following is close to an ideal black body?
1 Black lamp
2 Cavity maintained at constant temperature
3 Platinum black
4 A lamp of charcoal heated to high temperature
Explanation:
B An ideal black body is one which absorbs all the incident radiation without reflecting or transmitting any part of it. Black lamp absorbs approximately 96\% of incident radiation. An ideal black body can be realized in practice by a small hole in the wall of a hollow body which is at constant temperature.
AIPMT-2002
Thermal Properties of Matter
146481
Three stars $A, B, C$ have surface temperatures $\mathbf{T}_{A}, \mathbf{T}_{B}, \mathbf{T}_{C}$ respectively. Star A appears bluish, start $B$ appears reddish and star $C$ yellowish. Hence
D The appearance of a star depends on the wavelength $\left(\lambda_{\mathrm{m}}\right)$ at which it radiates maximum energy. This depends inversely on the surface temperature (T) of the star. Now, $\lambda_{\text {blue }} \lt \lambda_{\text {yellow }} \lt \lambda_{\text {red. }}$ Thus, star A (bluish) radiates the shortest $\lambda$ and must be at the highest temperature, while star B (reddish) must be at the lowest temperature.
NEET Odisha-2020
Thermal Properties of Matter
146482
Liquid oxygen at $50 \mathrm{~K}$ is heated to $300 \mathrm{~K}$ at constant pressure of $1 \mathrm{~atm}$. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?
1
2
3
4
Explanation:
A If the first phase temperature of liquid $\mathrm{O}_{2}$ will increase as initially. It is at $50 \mathrm{~K}$ which is in liquid state for oxygen. The second phase when liquid oxygen changes to gas, temperature remain constant. In the third phase, the temperature of oxygen in gaseous state will further increase.
AIPMT-2012
Thermal Properties of Matter
146485
Mercury thermometer can be used to measure temperature upto
1 $260^{\circ} \mathrm{C}$
2 $100^{\circ} \mathrm{C}$
3 $360^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Explanation:
C Mercury thermometers are used in measurement because mercury is the only metal that is in liquid state at room temperature. Mercury is used in thermometers it can measure temperature over a wide range. The Lower limit being $-37^{\circ} \mathrm{C}$ and the upper limit being $357^{\circ} \mathrm{C}$
146455
Which of the following devices is used for detecting thermal radiations?
1 Thermopile
2 Liquid thermometer
3 Platinum resistance thermometer
4 Constant volume thermometer
Explanation:
A A thermopile is a sensitive instrument, used for detection of heat radiation and measurement of their intensity.
WB JEE-2007
Thermal Properties of Matter
146472
Which of the following is close to an ideal black body?
1 Black lamp
2 Cavity maintained at constant temperature
3 Platinum black
4 A lamp of charcoal heated to high temperature
Explanation:
B An ideal black body is one which absorbs all the incident radiation without reflecting or transmitting any part of it. Black lamp absorbs approximately 96\% of incident radiation. An ideal black body can be realized in practice by a small hole in the wall of a hollow body which is at constant temperature.
AIPMT-2002
Thermal Properties of Matter
146481
Three stars $A, B, C$ have surface temperatures $\mathbf{T}_{A}, \mathbf{T}_{B}, \mathbf{T}_{C}$ respectively. Star A appears bluish, start $B$ appears reddish and star $C$ yellowish. Hence
D The appearance of a star depends on the wavelength $\left(\lambda_{\mathrm{m}}\right)$ at which it radiates maximum energy. This depends inversely on the surface temperature (T) of the star. Now, $\lambda_{\text {blue }} \lt \lambda_{\text {yellow }} \lt \lambda_{\text {red. }}$ Thus, star A (bluish) radiates the shortest $\lambda$ and must be at the highest temperature, while star B (reddish) must be at the lowest temperature.
NEET Odisha-2020
Thermal Properties of Matter
146482
Liquid oxygen at $50 \mathrm{~K}$ is heated to $300 \mathrm{~K}$ at constant pressure of $1 \mathrm{~atm}$. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?
1
2
3
4
Explanation:
A If the first phase temperature of liquid $\mathrm{O}_{2}$ will increase as initially. It is at $50 \mathrm{~K}$ which is in liquid state for oxygen. The second phase when liquid oxygen changes to gas, temperature remain constant. In the third phase, the temperature of oxygen in gaseous state will further increase.
AIPMT-2012
Thermal Properties of Matter
146485
Mercury thermometer can be used to measure temperature upto
1 $260^{\circ} \mathrm{C}$
2 $100^{\circ} \mathrm{C}$
3 $360^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Explanation:
C Mercury thermometers are used in measurement because mercury is the only metal that is in liquid state at room temperature. Mercury is used in thermometers it can measure temperature over a wide range. The Lower limit being $-37^{\circ} \mathrm{C}$ and the upper limit being $357^{\circ} \mathrm{C}$
