A neutron moving with a speed ‘v’ makes a head on collision with a stationary hydrogen atom in ground state.  The minimum kinetic energy of the neutron for which inelastic collision will take place is :

  • Option 1)

    10.2 eV

  • Option 2)

    16.8 eV

  • Option 3)

    12.1 eV

  • Option 4)

    20.4 eV

 

Answers (1)

As we learnt in

Inelastic Collision -

Can happen when energy of neutron is grater than 20.4 ev ,

but not equal to 20.4 ev, 24.18 ev, 25.5 ev,26.18 ev (etc )

- wherein

Energy exchanged is less than K.E.of neutron

 

 If kinetic energy of neutron is K.

The amount of energy exchanged in perfectly inelastic collision =\frac{K}{2}

But \frac{K}{2}\geq10.2\ eV (energy difference between ground state and first excited state)

K\geq20.4\ eV

Correct option is 4


Option 1)

10.2 eV

This is an incorrect option.

Option 2)

16.8 eV

This is an incorrect option.

Option 3)

12.1 eV

This is an incorrect option.

Option 4)

20.4 eV

This is the correct option.

Most Viewed Questions

Preparation Products

JEE Main Rank Booster 2022

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 9999/-
Buy Now
Knockout JEE Main 2022 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Live Classes, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Knockout JEE Main 2023 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Live Classes, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Knockout JEE Main 2022

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Live Classes(Classes will start from Last week of September), Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 34999/- ₹ 24999/-
Buy Now
Test Series JEE Main 2022

Chapter/Subject/Full Mock Tests for JEE Main, Personalized Performance Report, Weakness Sheet, Complete Answer Key,.

₹ 4999/-
Buy Now
Boost your Preparation for JEE Main 2021 with Personlized Coaching
 
Exams
Articles
Questions