A radioactive substance emits

English

Gujarati

Hindi

13.Nuclei

easy

A radioactive substance emits

A

$\alpha$- rays

B

$\beta$- rays

C

$\gamma$- rays

D

All of these

Solution

(d) Radiation is the energy that is released as particles or rays, during radioactive decay.

A radioactive substance emits $\alpha$ or $\beta$ rays.

Standard 12

Physics

Share

Similar Questions

The $S.I.$ unit of radioactivity is

easy

A radioactive element has half life period $800$ years. After $6400$ years what amount will remain?

medium

(AIPMT-1989)

Who invented radioactivity ?

easy

A radio isotope $X$ with a half-life $1.4 \times 10^{9}\; years$ decays of $Y$ which is stable. A sample of the rock from a cave was found to contain $X$ and $Y$ in the ratio $1: 7$. The age of the rock is …….. $ \times 10^9\; years$

medium

(AIPMT-2014)

In a sample of radioactive material, what percentage of the initial number of active nuclei will decay during one mean life ………. $\%$

medium