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ICSE Class 8 Physics Question 2 of 23

Light Energy — Question 3

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Question 3

The diagram given below shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.

(a)

Ray of light AO falling on a surface separating two media. Draw the refracted ray. Light Energy, Concise Physics Solutions ICSE Class 8.

(b)

Ray of light AO falling on a surface separating two media. Draw the refracted ray. Light Energy, Concise Physics Solutions ICSE Class 8.

(c)

Ray of light AO falling on a surface separating two media. Draw the refracted ray. Light Energy, Concise Physics Solutions ICSE Class 8.
Answer

(a) When light ray AO passes from air (rarer medium) to water (denser medium), it bends towards the normal as shown below.

Completed diagram, light ray AO passes from air (rarer medium) to water (denser medium). Light Energy, Concise Physics Solutions ICSE Class 8.

(b) When light ray AO travels from water (denser medium) to air (rarer medium), it bends away from the normal as shown in the diagram below.

Completed diagram, light ray AO travels from water (denser medium) to air (rarer medium). Light Energy, Concise Physics Solutions ICSE Class 8.

(c) When light ray AO is incident normally to the surface, it passes undeviated as shown in the figure below.

Completed diagram, Light ray AO incident normally to the surface. Light Energy, Concise Physics Solutions ICSE Class 8.