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 Test Help For Physics Subject Test Prep. All Admissions Test. All Jobs Test prep. B Tech and Medical Test prep. Engineering and BDS Test prep.

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.

## 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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