SaraNextGen Study App [2023-24]
Last Updated On 01-06-2023 - By Jeesha Sara

A beam of ordinary unpolarised light passes through a tourmaline crystal  and then it passes through another tourmaline crystal , which is oriented such that its principal plane is parallel to that of . The intensity if emergent light is. Now  is rotated by  about the ray. The emergent ray will have an intensity

a)

b)

c)

d)


Question ID - 150216 :-

A beam of ordinary unpolarised light passes through a tourmaline crystal  and then it passes through another tourmaline crystal , which is oriented such that its principal plane is parallel to that of . The intensity if emergent light is. Now  is rotated by  about the ray. The emergent ray will have an intensity

a)

b)

c)

d)

1 Answer
5876 Votes
3537

Answer Key : (c) -

(c)

Intensity of light from

On rotating through ,

           (law of Malus)



Next Question :

Three electric bulbs with same voltage ratings of 110 volts but wattage ratings of 40, 60 and 100 watts respectively are connected in series across a 220 volt supply line. If their brightness are  respectively, then

a)

b)

c)

d)

Bulbs will burn out due to the high voltage supply


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