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Unit 21: Nuclear Physics

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1

The nucleus of an atom carries:

2

A chain reaction occurs when:

3

Fusion requires very high:

4

Which nuclear radiation is unaffected by electric fields?

5

Which is NOT a source of background radiation?

6

The nucleus is extremely small compared to the:

7

Which of the following is a radioisotope?

8

Atoms of the same element with different mass numbers are called:

9

Half-life of a radioactive substance is the time required for:

10

Which observation supports the existence of dark matter?

11

Which radiation has the highest penetrating power?

12

Which particle has no electric charge?

13

Which radiation is most dangerous inside the human body?

14

A scientific theory is falsifiable if it can be:

15

Falsifiability is related to:

16

Dark matter is called dark because it:

17

The SI unit of radioactivity is:

18

The relation E = mc² shows that:

19

Which device is used to detect radiation?

20

Ionizing radiations mainly cause damage by:

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