A ray of light travelling in water falls at right angles to the boundary of a parallel-sided glass block. The ray of light : (a) is refracted towards the normal (b) is refracted away from the normal (c) does not get refracted (d) is reflected along the same path.

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Solution

(c) does not get refracted as it goes along the normal

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When a ray of light travelling in glass enters into water obliquely : (a) it is refracted towards the normal (b) it is not refracted at all (c) it goes along the normal (d) it is refracted away from the normal

Q. Light travelling from a denser medium to a rarer medium along a normal to the boundary:

(a) is refracted towards the normal
(b) is refracted away from the normal
(c) goes along the boundary
(d) is not refracted

Light travelling from a denser medium. to a rarer medium alone a normal to the boundary : (a) is refracted towards the normal (b) is refracted away from the normal (c) goes along the boundary (d) is not refracted

Q. Statement 1: A light ray travelling from a denser medium to a rarer medium bends away from the normal.
Statement 2: The speed of the light do not change as the light gets refracted.

Q. When a ray of light is refracted, the refracted ray does not have the same wavelength as the incident ray. Which of the following explain this phenomenon?
I. Some of the energy of the incident ray is carried away by the reflected ray
II. The boundary surface absorbs some of the energy of the incident ray
III. The incident and refracted rays do not travel with the same velocity

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