Advertisements
Advertisements
Question
When a ray of light travels normal to the given surface, then the angle of refraction is ______.
Options
180°
0°
90°
45°
Advertisements
Solution
When a ray of light travels normal to the given surface, then the angle of refraction is 0°.
Explanation:
Traveling parallel to the normal is the refracted ray. Therefore, the angle of refraction is zero.
APPEARS IN
RELATED QUESTIONS
Which type of reflection of light leads to the formation of images?
An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the positions of the original and final images seen in the mirror is ______.
A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is ______.
In which material do you think light rays travel faster-glass or air?
Water is optically .......... than air.
What do you understand by refraction of light?
What is the cause of refraction of light when it passes from one medium to another?
Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.
The ratio of the sine of the angle of incidence to the sine of ______ is constant.
Under what circumstances there won’t be any refraction of light when it enters from one medium to another?
