Question

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) x nY

Answer 1

Explanation:

According to the question,  

Speed of light = $3 \times 108 m/s$

Speed of light in medium X = $2\times108 m/s$

Speed of light in medium Y = $2.5\times108 m/s$

air nX  $=\frac{\text { Speed of light in air }}{\text { Speed of light in medium } X}=\frac{3 \times 10^{8} \mathrm{m} / \mathrm{s}}{2 \times 10^{8} \mathrm{m} / \mathrm{s}}$

air nX = 1.5

air nY = $\frac{\text { Speed of light in air }}{\text { Speed of light in medium } Y}=\frac{3 \times 10^{8} \mathrm{m} / \mathrm{s}}{2.5 \times 10^{8} \mathrm{m} / \mathrm{s}}$

air nY = 1.2

XnY= $\frac{\text {Speed of light in mediumX } X}{\text { Speed of light in mediumY } Y}=\frac{2 \times 10^{8} \mathrm{m} / \mathrm{s}}{2.5 \times 10^{8} \mathrm{m} / \mathrm{s}}$

XnY= 0.8

You can get all the answers of Chapter 5 in the link below:

https://brainly.in/question/14963222

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