The half-life of a radioactive substance is 4 | vedclass

Name: PDF Generator App | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(c) To reduce one fourth it takes time $t = 2\left( {{T_{1/2}}} \right) = 2 &times; 40$

$= 80 \,years.$

Decay constant $\lambda = \frac{{0.

Vedclass · Accepted Answer

$80\, year, 0.0173 \,year$

Vedclass · Answer

(c) To reduce one fourth it takes time $t = 2\left( {{T_{1/2}}} \right) = 2 &times; 40$

$= 80 \,years.$

Decay constant $\lambda = \frac{{0.693}}{{{T_{1/2}}}} = \frac{{0.693}}{{40}} = 0.0173\,years$

The half-life of a radioactive substance is $40$ years. How long will it take to reduce to one fourth of its original amount and what is the value of decay constant

Similar Questions

Radioactive material $'A'$ has decay constant $8 \lambda$ and material $'B'$ has decay constant $ ' \lambda '$. Initially they have same number of nuclei . After what time, the ratio of number of nuclei of material $'B'$ to that $'A'$ will be $\frac{1}{e}$ ?

Radioactivity is

A radioactive sample has half-life of $5$ years. Probability of decay in $10$ years will be ........$\%$

The average life $T$ and the decay constant $\lambda $ of a radioactive nucleus are related as

The graph between the instantaneous concentration $(N)$ of a radioactive element and time $(t)$ is