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how much dose is absorbed in 30 min in a sphere of water 1cm in diameter, with an infinitesimally small P-32 souce placed at center of the sphere, with 6x105 disintegrations per gram of water? Eb- = 1.71 MeV  A) 12 cGy B) 24 cGy C) 29 cGy D) 6cGy  E) 59 cGy

how much dose is absorbed in 30 min in a sphere of water 1cm in diameter, with an infinitesimally small P-32 souce placed at center of the sphere, with 6x105 disintegrations per gram of water? Eb- = 1.71 MeV  A) 12 cGy B) 24 cGy C) 29 cGy D) 6cGy  E) 59 cGy

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how much dose is absorbed in 30 min in a sphere of water 1cm in diameter, with an infinitesimally small P-32 souce placed at center of the sphere, with 6x105 disintegrations per gram of water? Eb- = 1.71 MeV 

A) 12 cGy

B) 24 cGy

C) 29 cGy

D) 6cGy 

E) 59 cGy 

Expert Solution
Step 1

Writing the reaction for the disintegration of P-32

P1532→S1632+β-+ν+1.17MeV

Since the following reaction is a β decay.

hence 

Eavg =.694MeV/dis

Given 

N =6×105 dis g-1sec-1

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