Question

The refractive index of glass is 1.5. The speed of light in glass is

(a) 3 x 10⁸ m/s

(b) 2 x 10⁸ m/s

(c) 1 x 10⁸ m/s

(d) 4 x 10⁸ m/s

Answer 1

Answer is (b) 2 x 10⁸ m/s