If the speed of light in air is 3 $\times$ $10^{8}$ m/s and speed of light in water is reduced by a factor of 1.3 when compared with that of the speed of light in air. Find out the speed of light in water?

$2.25 \times$ $10^{8} m s^{- 1}$

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$3 \times$ $10^{8} m s^{- 1}$

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$330 m s^{- 1}$

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$1.6 \times$ $10^{8} m s^{- 1}$

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Solution

The correct option is A
$2.25 \times$ $10^{8} m s^{- 1}$

The speed of light in water is reduced by a factor of 1.33 which means the speed of light in water is $\frac{3 \times 10^{8}}{1.33}$ $= 2.25 \times 10^{8} m s^{- 1}$

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Similar questions

If the speed of light in air is 3 $\times$ $10^{8}$ m/s and speed of light in water is reduced by a factor of 1.3 when compared with that of the speed of light in air. Find out the speed of light in water?

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If the speed of light in air is 3 × 108 m/s and speed of light in water is reduced by a factor of 1.3 when compared with that of the speed of light in air. Find out the speed of light in water?

The correct option is A 2.25×​​ 108 ms−1 The speed of light in water is reduced by a factor of 1.33 which means the speed of light in water is 3×1081.33​ =2.25×108 ms−1

If the speed of light in air is 3 $\times$ $10^{8}$ m/s and speed of light in water is reduced by a factor of 1.3 when compared with that of the speed of light in air. Find out the speed of light in water?

The correct option is A
$2.25 \times$ $10^{8} m s^{- 1}$

The speed of light in water is reduced by a factor of 1.33 which means the speed of light in water is $\frac{3 \times 10^{8}}{1.33}$ $= 2.25 \times 10^{8} m s^{- 1}$