A light beam is described by| Electromagnetic Waves|JEE-MAIN

JEE-MAIN 2021

26-08-2021 S2

Question

A light beam is described by $E=800 \sin \omega\left(t-\frac{x}{c}\right)$. An electron is allowed to move normal to the propagation of light beam with a speed of $3 \times 10^7 \mathrm{~ms}^{-1}$. What is the maximum magnetic force exerted on the electron? |

Select the correct option:

$1.28 \times 10^{-18} \mathrm{~N}$

$1.28 \times 10^{-21} \mathrm{~N}$

$12.8 \times 10^{-17} \mathrm{~N}$

$12.8 \times 10^{-18} \mathrm{~N}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution