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
$V=\frac{1}{\sqrt{µ0ε0}}$ In the light of the above statements, choose the correct answer from the options given below.

• A. Both statement I and statement II are true
• B. Both statement I and statement II are false
• C. Statement I is correct but statement II is false
• D. Statement I is incorrect but statement II is true

Answer 1

Answer: (C)

Statement I is correct but statement II is false

Answer 2

In a material medium speed of light is given by:

$v=\frac{1}{\sqrt{ε_0ε_rµ_0µ_r}}$

So statement II is false.

Therefore, the correct option is (C): Statement I is correct but statement II is false