Question

An electromagnetic wave of frequency
v = 3.0 MHz passes from vacuum into a
dielectric medium with permittivity ε = 4.0 . Then
(a) wave length is halved and frequency
remains unchanged
(b) wave length is doubled and frequency
becomes half
(c) wave length is doubled and the frequency
remains unchanged
(d) wave length and frequency both remain
unchanged.

Answer 1

Explanation:

An electromagnetic wave of frequency

v = 3.0 MHz passes from vacuum into a

dielectric medium with permittivity ε = 4.0 . Then

(a) wave length is halved and frequency

remains unchanged✓✓

(b) wave length is doubled and frequency

becomes half

(c) wave length is doubled and the frequency

remains unchanged

(d) wave length and frequency both remain

unchanged

answer∴ wavelength is halved and frequency remains unchanged.

Answer 2

Answer:

here is and....

a) wave length is halved and frequency ✅✔✅

remains unchanged