A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 3/4 of the angle of the prism. The angle of deviation is

Question:

Options :

(a) 45 degree
(b) 39 degree
(c) 20 degree
(d) 30 degree

Answer :

(d) 30 degree

Answer Steps :

step 1

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Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be

If a body is executing simple harmonic motion then

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