The speed of light in air is 3 × 108 m/s. In medium X its speed is 2 × 108 m/s and in medium Y the speed of light is 2.5 × 108 m/s. Calculate:
(a) air nx
(b) air ny
(c) xny
Given:
Speed of light in air = 3.0 × 108 m/s
Speed of light in medium X = 2 × 108 m/s
Speed of light in medium Y = 2.5 × 108 m/s
(a) air nx = ?
airnx = \(\frac{speed\;of\;light\;in\;air}{speed\;of\;light\;in\;medium\; X}\)
airnx = \(\frac{3.0 \times 10^8\; m/s}{2 \times 10^8\;m/s}\)
= 1.5
(b) airny= ?
airny = \(\frac{speed\;of\;light\;in\;air}{speed\;of\;light\;in\;medium\; Y}\)
airny = \(\frac{3.0 \times 10^8\; m/s}{2.50 \times 10^8\;m/s}\)
= 1.2
(c) xny = ?
xny = \(\frac{speed\;of\;light\;in\;medium\; X}{speed\;of\;light\;in\;medium\; Y}\)
xny = \(\frac{2.0 \times 10^8\; m/s}{2.50 \times 10^8\;m/s}\)
= 0.8