JEE Main 2022 · 27 Jun · Shift 2 · Physics Q45

← JEE Main 2022 · 27 Jun · Shift 2

PhysicsSingle correct+4 / -1Question 45 of 90

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 $v=\dfrac1{\sqrt{\mu_0\varepsilon_0}}$ .

In the light of the above statements, choose the correct answer from the options given below.

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

Answer and worked solution

Official answer: C

Statement I is true. Statement II is false: in a medium $v=\dfrac1{\sqrt{\mu\varepsilon}}$ ; $\dfrac1{\sqrt{\mu_0\varepsilon_0}}$ is the speed in vacuum.

(C)

Topics:Properties of EM waves

← Previous question Next question →

JEE Main 2022 · 27 Jun · Shift 2, Physics question 45