State the speed of (i) light and (ii) sound in air?

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Solution

(i)The speed of light in air is about 300 million meters per second or $3 \times 10^{8} m s^{- 1}$

(ii)The speed of sound through air is about 340 meters per second.

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A light ray passes from water to (i) air, and (ii) glass. In each case, state how does the speed of light change.

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State the speed of (i) light and (ii) sound in air?

(i)The speed of light in air is about 300 million meters per second or 3×108ms−1 (ii)The speed of sound through air is about 340 meters per second.

(i)The speed of light in air is about 300 million meters per second or $3 \times 10^{8} m s^{- 1}$

(ii)The speed of sound through air is about 340 meters per second.