Question

Fill in the blanks
ce.
1. At critical angle of incidence, the angle of refraction is...........
2
n sin i=n, sin r, is called.............
3. Speed of light in vaccum is ....
4. Total internal reflection takes place when a light ray propagates from .......... to ............. medium.
5. The refractive index of a transparent material is 3/2. The speed of the light in that medium is
ion
V.
6. Mirage is an example of ..........​

Answer 1

Answer:

1. 90 degrees
2. Ans- 2 is upper images
3. 299,792 kilometres per hour
4. denser to rarer medium
5. 1.5
6. a tree in a pond of water