JEE Main

AI Gen: Electromagnetic Waves question bank (Physics)

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Q1.

The electric field in an electromagnetic wave is given by $E_y = 50 \sin[\omega(t - x/c)]\text{ V/m}$. The amplitude of the associated magnetic field vector is:

Topic: Electromagnetic Waves | Source: AI Generated (JEE Main)

(A)

$1.67 \times 10^{-7}\text{ T}$

(B)

$5.0 \times 10^{-8}\text{ T}$

(C)

$3.0 \times 10^{8}\text{ T}$

(D)

$1.5 \times 10^{-6}\text{ T}$

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Q2.

Light with an energy flux of $18\text{ W/cm}^2$ falls on a non-reflecting surface at normal incidence. If the surface area is $20\text{ cm}^2$, the total force exerted by the light on the surface for a complete absorption time of $30\text{ seconds}$ is:

Topic: Electromagnetic Waves | Source: AI Generated (JEE Main)

(A)

$1.2 \times 10^{-5}\text{ N}$

(B)

$3.6 \times 10^{-6}\text{ N}$

(C)

$2.4 \times 10^{-5}\text{ N}$

(D)

$1.8 \times 10^{-6}\text{ N}$

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