Physics · 2022
JEE Main · 27 July 2022, Shift 1 · Q45
A beam of light travelling along X-axis is described by the electric field E_y=900 sin ω( t -x / c). The ratio of electric force to magnetic force on…
A beam of light travelling along X-axis is described by the electric field $\displaystyle E_y=900 \sin \omega(\mathrm{t}-x / c)$. The ratio of electric force to magnetic force on a charge q moving along Y-axis with a speed of $\displaystyle 3 \times 10^7 \mathrm{~ms}^{-1}$ will be :
(Given speed of light $\displaystyle =3 \times 10^8 \mathrm{~ms}^{-1}$
Official answer
(3)
$\displaystyle 10$:$\displaystyle 1$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.