A light wave is incident normally on a glass slab of refractive index 1.5. If 4% of light gets reflected and the amplitude of the electric field of the incident light is 30V/m, then the amplitude of the electric field for the wave propagating in the glass medium will be:
a.
10 V/m
b.
24 V/m
c.
30 V/m
d.
6 V/m
a.
10 V/m
b.
24 V/m
c.
30 V/m
d.
6 V/m
Question ID - 50618 | SaraNextGen Top Answer A light wave is incident normally on a glass slab of refractive index 1.5. If 4% of light gets reflected and the amplitude of the electric field of the incident light is 30V/m, then the amplitude of the electric field for the wave propagating in the glass medium will be:
a.
10 V/m
b.
24 V/m
c.
30 V/m
d.
6 V/m
A light wave is incident normally on a glass slab of refractive index 1.5. If 4% of light gets reflected and the amplitude of the electric field of the incident light is 30V/m, then the amplitude of the electric field for the wave propagating in the glass medium will be:
|
a. |
10 V/m |
b. |
24 V/m |
|
c. |
30 V/m |
d. |
6 V/m |
1 Answer
127 votes
Answer Key / Explanation : (b) -
Prefracted = 
PI
⇒ K2
= 
K1
⇒r2
= 
r1
⇒
= 
× (30
At = 
= 24
127 votes
Answer Link
127