Nuclear Physics

This Test Contains Questions from Chapter 21 of Physics.

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Nuclear Physics

Nuclear Physics

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1. Question

The background radiation to which we are exposed on the average is ____ per year ?

2. Question

The charge on proton is :

3. Question

Doses of ___ will cause radiation burns to the skin :

4. Question

For Sun, The temperature of its core is about _____ degree centigrade and its surface temperature is about ____ degree centigrade :

5. Question

Which of the following don’t experience strong nuclear force :

6. Question

Half life of U-238 is :

7. Question

Isotopes of Hydrogen are :

8. Question

Neutron is Discovered by :

9. Question

Atomic Bomb is an example of :

10. Question

For Some of the absorbed dose a-particles are ___ times more damaging than X-rays :

11. Question

Unit of Radioactivity ‘ curie ‘ is equal to :

12. Question

When Nucleus emits an alpha particle its mass number drops by :

13. Question

Which of the following is Best shield against gamma rays ?

14. Question

1 amu is equal to = ?

15. Question

If Energy of electromagnetic nuclear reactions is less than 0.51 MeV then the dominant process is :

16. Question

What %age of Original radioactive atoms left after five half lives :

17. Question

in fast reactor , the type of uranium used is :

18. Question

Energy liberated when one atom of U -235 undergoes fission reaction is about :

19. Question

Strontium 90 is used as :

20. Question

Binding energy per nucleon is maximum for ?

21. Question

Most abundant isotope of neon is :

22. Question

Those Elements whose charge number Z is greater than ___ are unstable :

23. Question

The Radioactive Decay constant has the same dimensions as that of :

24. Question

Dead time of GM counter is in the order of :

25. Question

An alpha particle falls through a potential difference of 50 volts. Energy acquired by it will be :

26. Question

Total Number of Protons in the Nucleus is called as :

27. Question

Building blocks of protons and neutrons are called as :

28. Question

Neutron and Protons are commonly called :

29. Question

An alpha particle ionizes a molecule or atom through :

30. Question

One amu is equal to :

319 thoughts on “”

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For Sun, The temperature of its core is about _ degree centigrade and its surface temperature is about degree centigrade :