When light travels from air into water, its speed increases.

True

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False

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Solution

The correct option is B False
The speed of light decreases with an increase in the optical density of the medium.
The optical density and refractive index are directly proportional to each other.
The optical density and refractive index of glass are greater than that of the air.
Thus, the speed of light in glass is lesser than that in air.
Hence, the statement is false.

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Similar questions

Q. When light enters water from air, what change is observed in its speed?

Q. Fill in the following blanks with suitable words:

(a) Light travelling along a normal is ...............refracted.
(b) Light bends when is passes from water into air. We say that it is ............

Fill in the blanks to complete the following sentences:

(a) When light travels from a rarer to a denser medium, its speed .............

(b) When light travels from a denser to a rarer medium, its speed..........

(c) The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be....................

Q. Read the given statements and select the correct option.
Statement 1: When a ray of light passes from air into water, it will bent towards the normal.
Statement 2: When light travels from air into water, its speed increases.

first when the light ray enters into water medium its speed is 2.25*10powr 8 if after refraction it moves away from the normal so its speed increases. hoe is this possible while travelling in water it lost its energy now how can it gain speed

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