Given below are two...|Electromagnetic Waves

JEE MAIN 2022

27-06-2022 S2

Question

Given below are two statements:
Statement I : A time varying electric field is a source of changing magnetic field and vice-versa. Thus a disturbance in electric or magnetic field creates EM waves.
Statement II : In a material medium. The EM wave travels with speed $v=\frac{1}{\sqrt{\mu_0 \varepsilon_0}}$ .
In the light of the above statements, choose the correct answer from the options given below:

Select the correct option:

Both statement I and statement II are true.

Both statement I and statement II are false.

Statement I is correct but statement II is false.

Statement I is incorrect but statement II is true.

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

The statement II is wrong as the velocity of ɛm wave in a medium is $\frac{1}{\sqrt{\mu \varepsilon}}=\frac{1}{\sqrt{\mu_0 \mu_r \varepsilon_0 \varepsilon_r}}$.

Question Tags

JEE Main

Physics

Easy

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