Physics, asked by sanchetiarham164, 9 months ago

The diagram below shows a glass block
suspended in a liquid. A beam of light of single
colour is incident from liquid on one side of the
block.​

Answers

Answered by joshuaabrahamshomu
3

Answer:

Explanation:

(i) (a) The speed of light, travelling from liquid to glass, slows down.

(b) Speed in liquids = Speed of light of air/Refractive index of liquid = 3 x 108/Refractive index  of liquid

Speed of light in glass = Speed of light in air/Refractive index of glass

= 3 x 108/Refractive index of glass

Since the refractive index in glass is usually higher than that of liquid, hence the speed of light in glass will be less.

(ii) As shown by line in the diagram, the emergent ray is parallel to the incident ray (when produced) and so there is no angular deviation.

(iii) See the diagram.

icse-solutions-class-10-physics-55

(iv) Since there is no refraction of light at the boundaries of the glass block, it is possible only when the speed of light through the liquid as well as through the block is the same. Hence the ratio between the speed of light through the liquid to the speed of light through glass must be 1 (one).

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