Heat & Thermodynamics Test Online MCQs Questions & Answers
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Heat & Thermodynamics Test Online MCQs

Test Name Heat & Thermodynamics MCQs Test
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Get multiple choice questions of the physics subject topic Heat & Thermodynamics online. All the visitors should attempt these questions to prepare for the admission test, medical test, engineering and recruitment test. Heat & Thermodynamics MCQs Test Online being added below.

Heat & Thermodynamics Test Online MCQs

Physics

1. A centigrade and Fahrenheit thermometers are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers a temperature of 140° the fall of the temperature as registered by the centigrade thermometer is:

 

Question 1 of 15

2. A black body, at a temperature of 227°C, radiates heat at a rate of 20 cal m⁻²s⁻¹. When its temperature is raised to 727°C, the heat radiated by it in cal m⁻²s⁻¹ will be closest to:

 

Question 2 of 15

3. An ideal gas at 27°C is compressed adiabatically to 8/27 its original volume [TVγ-1 = constant] and γ = 5/3, then the rise in temperature will be:

 

Question 3 of 15

4. The volume of a gas is reduced adiabatically to (1/4) of its volume at 27°C. If γ = 1.4. The new temperature will be:

 

Question 4 of 15

5. A black body is at a temperature 300 K. It emits energy at a rate, which is proportional to:

 

Question 5 of 15

6. The latent heat of vaporization water is 2240 J. If the work done in the process of vaporization of 1g is 168 J, then increase in internal energy is:

 

Question 6 of 15

7. The average kinetic energy of a gas molecule at 27°C is 6.21 x 10⁻²¹J, then its average kinetic energy at 227°C is:

 

Question 7 of 15

8. The real coefficient of volume expansion of glycerine is 0.000597 per °C and linear coefficient of expansion of glass is 0.000009 per °C. Then the apparent volume coefficient of expansion of glycerine is:

 

Question 8 of 15

9. During the adiabatic expansion of a gas the internal energy of a gas is found to decrease by 2 joule. The work done on gas during the process will be equal to:

 

Question 9 of 15

10. The colour of a star indicates its:

 

Question 10 of 15

11. If the temperature of a black body increase from 7°C to 287°C, then the rate of emission of radiation energy is:

 

Question 11 of 15

12. The radiation from the sun, incident normally at the surface of the earth is 20kcal/m² min. What would have the radiant energy, incident normally on the earth of the sun had a temperature, twice of the present one?

 

Question 12 of 15

13. In an adiabatic process the quantity which remains constant is:

 

Question 13 of 15

14. The relative humidity on a day, when partial pressure of water vapour is 0.012 x 10⁵ pa at 12°C is (take vapour pressure if water at this temperature as 0.016 x 10⁵ pa)

 

Question 14 of 15

15. A sample of gas expands from volume V₁ to V₂. The amount of work done by the gas is greatest, when the expansion is:

 

Question 15 of 15


 

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