QJEEM22Ph63d9: JEE Main 2022 Physics - Class 12 JEEM22Ph63d9 Solution: A beam of light travelling along X -axis is described by the…

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QJEEM22Ph63d9: JEE Main 2022 Physics - Class 12 JEEM22Ph63d9 Solution: A beam of light travelling along X -axis is described by the…

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 charge $q$ moving along $Y$ -axis with a speed of $3 \times 10^{7} {ms}^{- 1}$ will be :

(Given speed of light $= 3 \times 10^{8} {ms}^{- 1}$ )

Multiple Choice Options

A 1:01
B 1:10
C 10:01
D 1:02

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Accepted Answer

Ratio $= \frac{| q \vec{E} |}{| q \vec{v} \times \vec{B} |}$

$= \frac{E}{v B} = \frac{v_{w a v e}}{v}$

$\Rightarrow$ Ratio $= \frac{3 \times 10^{8}}{3 \times 10^{7}} = 10$

QJEEM22Ph63d9: JEE Main 2022 Physics - Class 12 JEEM22Ph63d9 Solution: A beam of light travelling along X -axis is described by the…

Multiple Choice Options

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