Multiple choice

Which of the following is not correct for gamma radiations? (a) Gamma radiations occur when the parent nucleus is in a state of excitation. (b) They are the electromagnetic waves. (c) Their ionising power is very high. (d) They affect a photographic plate. (e) They do not cause fluorescence.

  1. Only (a)

  2. Only (b)

  3. Both (a) and (c)

  4. Both (b) and (d)

  5. Both (c) and (e)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The ionising power of gamma radiations is very low as they are not composed of charged particles like alpha and beta particles. They cause fluorescence when they are incident on a fluorescent material.

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