Physics, asked by pk8272987, 7 months ago

53. The count rate of a Geiger-Muller counter for the radiationof a-radioactive material of half life of 30
minutes decreases of 5s-1 after 2 hours. The initial count rate was :
(A) 20 s-
(B) 25 s-1
(C) 80s-1
(D) 625s-1

Answers

Answered by patelanjali5059

2

Answer:

D 625S-1

Explanation:

THIS IS RIGHT ANSWER

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