Physics · 2021
JEE Main · 26 August 2021, Shift 2 · Q11
A light beam is described by E =800 sin ω( t -x/c). An electron is allowed to move normal to the propagation of light beam with a speed of 3 × 10^7…
A light beam is described by $\displaystyle \mathrm{E}=800 \sin \omega\left(\mathrm{t}-\frac{x}{\mathrm{c}}\right)$. An electron is allowed to move normal to the propagation of light beam with a speed of $\displaystyle 3 \times 10^7 \mathrm{~ms}^{-1}$. What is the maximum magnetic force exerted on the electron ?
Official answer
(2)
$\displaystyle 12.8 \times 10^{-18} \mathrm{~N}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.