Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

Options:

a

b

c

d

Correct Answer:

a

Explanation:

 t1/2(X) = t(Y)

$\Rightarrow \frac{ln2}{\lambda_X} = \frac{1}{\lambda_Y}$

$\Rightarrow \lambda_X = ln2 \lambda_Y$

$\Rightarrow \lambda_X < \lambda_Y$

 Higher is the decay constant, higher is the rate of decay.
Y decays at the faster rate.