Question

1.Speed of light is _______.

2. Light rays always travels in _________.

3. The focal length of a spherical mirror is equal to _________ its radius of

curvature.

4. A spherical mirror, whose reflecting surface is curved inwards, that is,faces

towards the centre of the sphere, is called a ______.​

Answer 1

Answer:

186,282

straight line

Answer 2

Answer:

1. 299792458 m/s in vaccum

2. straight line

3. half

4. concave

Hope it helps you.