rohimamiah2539 rohimamiah2539

10-09-2022
Physics

Answered

a sample of radioactive material emits 400000 particles over a period of 20 minutes calculate the activity of the source in Becquerel

Answer :

temdan2001 temdan2001

13-09-2022

The activity of the source in Becquerel is 333.3Bq

What is Activity ?

The number of nuclei that disintegrate or decay per unit time is known as Activity.

Given that a sample of radioactive material emits 400000 particles over a period of 20 minutes.

N = 400000 particles

t = 20 min = 20 x 60 = 1200 s

Activity A = dN/dt

A = 400000 / 1200

A = 333.3 particles / s

A = 333.3 Bq

Therefore,

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