Question

1)If the speed of light in glass is 1.8 x 10^8 m/s, and that in air is 3 x 10^8 m/s, calculate the
refractive index of glass with respect to air.
2) If the diameter of a sphere off with spiracle mirror is a part is 24 cm .what is the focal length of the spherical mirror .​

Answer 1

Answer:

1. 5/3

2. 12cm

Explanation:

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