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JEE Main 20257 AprilEvening Shift

Exam: JEE Main
Year: 2025
Date: 7 April
Shift: Evening Shift
Subject: Physics
Chapter: Electromagnetic Waves

JEE Main 2025 · 7 April · Evening Shift · Physics · Electromagnetic Waves

The unit of 2 I _0 c is : (I = intensity of an electromagnetic...

The unit of

\sqrt{\frac{2

\mathrm{I}

}{\epsilon_0 c}}

is :
(I = intensity of an electromagnetic wave,

\mathrm{c}:

speed of light)

Options

AVm
BNC
CNm
D $\mathrm{NC}^{-1}$

Correct answer

D. $\mathrm{NC}^{-1}$

Step-by-step solution

\begin{aligned}<br/>& \mathrm{I}=\frac{1}{2} \epsilon_0 \mathrm{E}_0^2 \times \mathrm{C} \\ & \mathrm{E}_0=\sqrt{\frac{2 \mathrm{I}}{\epsilon_0 \mathrm{C}}}<br/>\end{aligned}

E_0

: electric field N/C

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