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:
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.
✓ 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 $\frac{1}{\sqrt{\mu \varepsilon}}=\frac{1}{\sqrt{\mu_0 \mu_r \varepsilon_0 \varepsilon_r}}$.
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