# In gamma ray emission from a nucleus Option 1) only the proton number changes Option 2) both the neutron number and the proton number change Option 3) there is no change in the proton number and the neutron number Option 4) only the neutron number changes

As we learnt in

γ decay -

$\gamma$ ray emitted when nucleus undergoes radio active decay left it in excited state

- wherein

After emission of $\alpha ,\beta$  particle the product nucleus formed in excited state

$\gamma -rays$  emission takes place due to deexcitation of the nucleus. Therefore during $\gamma -rays$ emission, there is no change in the proton and neutron number.

Correct option is 3.

Option 1)

only the proton number changes

This is an incorrect option.

Option 2)

both the neutron number and the proton number change

This is an incorrect option.

Option 3)

there is no change in the proton number and the neutron number

This is the correct option.

Option 4)

only the neutron number changes

This is an incorrect option.

### Preparation Products

##### JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
##### Knockout JEE Main April 2021 (Easy Installments)

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 4999/-
##### Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
##### Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-