﻿ A sample of a radioactive element has a mass of 10g at an instant t = 0. The oppropriate mass of this element in the element in the sample after two mean lives is : Kaysons Education

A Sample Of A Radioactive Element Has A Mass Of 10g At An Instant T = 0. The oppropriate mass Of This Element In The Element In The Sample After Two Mean Lives Is

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Question

Solution

Correct option is

1.35 gm

t = 2    τ = 2 × 1.44 T = 2.88 T

= 10 × .1358 = 1.358 gm.

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