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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. The surface temperature of a body is 727°C and that of another body is 327. The ratio of total energies radiated by them is:

 

Question 1 of 15

2. The instrument used to measure the temperature of the source from its thermal radiation is:

 

Question 2 of 15

3. 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 3 of 15

4. When a solid is converted into a gas, directly by heating then this process is known as:

 

Question 4 of 15

5. On a cold morning, a metal surface on touching is felt colder than a wooden surface, because the metal has:

 

Question 5 of 15

6. A quantity of heat required to change the unit mass of a solid substance to its liquid state, while the temperature remains constant, is known as

 

Question 6 of 15

7. Woolen clothes keep the body warm because the wool:

 

Question 7 of 15

8. The absolute zero is the temperature at which

 

Question 8 of 15

9. A black body is heated from 27°C to 127°C. The ratio of their energies of radiation emitted will be:

 

Question 9 of 15

10. Heat travels through vacuum by:

 

Question 10 of 15

11. 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 11 of 15

12. Which one of the following is not a thermodynamical co-ordinate?

 

Question 12 of 15

13. The density of a substance at 0°C is 10 g/cc and at 100°C, its density is 9.7 g/cc. The coefficient of linear expansion of the substance 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. Fraunh offer line of the solar system is an example of:

 

Question 15 of 15


 

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