Advertisements
Advertisements
Question
Name the factors affecting the critical angle for the pair of media.
Advertisements
Solution
Factors affecting the critical angle:
(i) Angle of incidence.
(ii) Refractive index of the medium.
RELATED QUESTIONS
A ray of light travels from water to air as shown in the diagram given below :

1) Copy the diagram and complete the path of the way. Given the critical angle for water is 48°.
2) State the condition so that internal reflection occurs in the above diagram.
Which colour of light has a higher critical angle? Red light or green light.
Plot a graph between
Angle of incidence versus angle of refraction.
If a light ray does not undergo, refraction at the boundary between two media, the angle of incidence is:
The resultant `vec"R"` of `vec"P"` and `vec"Q"` is perpendicular to `vec"P"`. Also `|vec"P"|=|vec"R"|`. The angle between `vec"P"` and `vec"Q"` is ______.
[tan 45° = 1]
A green light is incident from the water to the air-water interface at the critical angle (C). Select the correct statement.
Which one of the following is NOT the correct formula for refractive index of glass w.r.t. air (aμg) (i = angle of incidence, r = angle of refraction)
Write any two uses of total internal reflection.
A rectangular block of glass ABCD has a refractive index 1.6. A pin is placed midway on the face AB (Figure). When observed from the face AD, the pin shall ______.

- appear to be near A.
- appear to be near D.
- appear to be at the centre of AD.
- not be seen at all.
