(a) Name one factor that affects the lateral displacement of light as it passes through a rectangular glass block. (b) The speed of light in glass is 2 10^5 km / s. What is the refractive index of glass?

(a) Lateral displacement increases with the increase in width of glass slab and the angle of incidence of light on the glass slab. (b) Refractive index of glass = Speed of light in air Speed of light in glass =3 10^5 km / s 2 10^5 km / s =1.5.

(a) Name one factor that affects the lateral displacement of ligh…

A man climbs a slope and another walks same distance on level road. Which of the two expends more energy and why?

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Make the correct choices in the following items :
A lens used as a magnifying glass
(i) ls a diverging lens
(ii) Produces a virtual image
(iii) ls placed with the object nearer the lens than the principle focus

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(ii) What will be the ratio of their frequencies?

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Define the following:
Electromotive force

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