Electromagnetic Waves

JEE Main level, single correct, medium

36 of 165

Question 36 of 165

Given below are two statements:
Statement I: Electromagnetic waves carry energy as they travel through space and this energy is equally shared by the electric and magnetic fields.
Statement II: When electromagnetic waves strike a surface, a pressure is exerted on the surface.
In the light of the above statements, choose the most appropriate answer from the options given below:

Show answer and solution

Answer: (B) Both Statement I and Statement II are correct

Electromagnetic wave carries energy shared equally in magnetic and electric field which is given by, =12ϵ0E2=B22μ0=\dfrac{1}{2}{\epsilon }_{0}{E}^{2}=\dfrac{{B}^{2}}{2{\mu }_{0}}, as E=cBE=cB and c2=1μ0ϵ0{c}^{2}=\dfrac{1}{{\mu }_{0}{\epsilon }_{0}}.
Also, Electromagnetic wave carries momentum and therefore exerts force when it strikes a surface.

JEE Main question paper PDF

Open a shift to read the full paper on this page, or download it.

JEE Main 2025 Apr 2 Shift 1 question paper

Open Download PDF

Opening paper…

Explain it as a whiteboard videoStep-by-step, in Hinglish or English. Your first video needs no login.Solved it on paper but got it wrong?Upload a photo of your working. Mistake Doctor marks the exact line that broke.

More Physics practice

JEE Main Physics practice question on Electromagnetic Waves (Electromagnetic Waves and Maxwell's equations), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.