First slide

Radio activity

Question

A radioactive sample has $N_{0}$ active atoms at t = 0. If the rate of disintegration at any time is R and the number of atoms is N, then the ratio R/N varies with time as

Moderate

A
B
C
D

Solution

$Rate R = - \frac{dN}{dt} = {λN}_{0} e^{- λt} = λN \Rightarrow \frac{R}{N} = λ (constant)$
i.e., graph between $\frac{R}{N}$ and t, be a striaght line parallel to the time axis.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App