Physics Knowledge Online Test

1. The silvered surface of thermos flask prevents transfer of heat by:

2. On which principal does the tape-recorder function?

3. Sound travels fastest through:

4. A plant with green leaves placed in red light will appear:

5. Which meta is commonly used as a electromagnet?

6. Electromagnetic wave travel with the:


7. The wave which do not require any medium is:

8. Sound travel faster in:

9. The common refrigerant used in the domestic refrigerator is:

10. In the process of galvanization an iron sheet is coated with:

11. Colours seen on oil film spread on water are seen because of:

12. Who said, ‘A body will remain at rest unless an external force acts on the body’?

13. A fuse wire is used to:

14. Energy of a body due to its motion is called:

15. The tendency of a liquid drop to contract and occupy minimum area is due to:

16. When a constant force is applied to a body it moves with uniform:

17. Which mirror can be used to focus sunlight?


18. Which of the following does not admit any division?

19. Which of the following is a good conductor of electricity?

20. What is the melting point of Tungsten?


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