A light ray travelling in glass medium is incident on glass-air interface at an angle of incidence θ. The reflected ( R ) and transmitted ( T ) intensities, both as function of θ, are plotted. The correct sketch is

Question

A light ray travelling in glass medium is incident on glass-air interface at an angle of incidence θ. The reflected ( R ) and transmitted ( T ) intensities, both as function of θ, are plotted. The correct sketch is (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

After critical angle reflection will be 100% and transmission
is 0%. Options (b) and (c) satisfy this condition. But option
(c) is the correct option. Because in option (b) transmission is
given 100% at

θ

= 0

^{\circ}

, which is not true.

∴

The correct answer is (c).

Q. A light ray travelling in glass medium is incident on glass-air interface at an angle of incidence θ. The reflected ( R ) and transmitted ( T ) intensities, both as function of θ, are plotted. The correct sketch is

After critical angle reflection will be 100% and transmission is 0%. Options (b) and (c) satisfy this condition. But option (c) is the correct option. Because in option (b) transmission is given 100% at θ = 0∘, which is not true. ∴ The correct answer is (c).

Q. A light ray travelling in glass medium is incident on glass-air
interface at an angle of incidence $θ$ . The reflected ( R ) and
transmitted ( T ) intensities, both as function of $θ$ , are plotted.
The correct sketch is

After critical angle reflection will be 100% and transmission
is 0%. Options (b) and (c) satisfy this condition. But option
(c) is the correct option. Because in option (b) transmission is
given 100% at $θ$ = 0 $^{\circ}$ , which is not true.
$∴$ The correct answer is (c).