Electromagnetic Waves Question 8
Question 8 - 2024 (31 Jan Shift 2)
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:
(1) Statement I is incorrect but Statement II is correct
(2) Both Statement I and Statement II are correct.
(3) Both Statement I and Statement II are incorrect.
(4) Statement I is correct but Statement II is incorrect.
Show Answer
Answer: (2)
Solution:
$\frac{1}{2} \varepsilon_{0} \mathrm{E}^{2}=\frac{\mathrm{B}^{2}}{2 \mu_{0}}$
$\because \mathrm{E}=\mathrm{CB}$ and $\mathrm{C}=\frac{1}{\mu_{0} \varepsilon_{0}}$
