Q. A device G.M counter is used for the measurement of which of the following?

(A) Speed of air
(B) Mass number
(C) Radioactivity
(D) Valence

✅ Correct Answer: (C) Radioactivity

Published by Jitendra Singh ⭐ 7.50K Points at 27-Mar-2022 08:06 pm in Physics

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