When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index

Question:

Options :

(a) equal to that of glass
(b) less than one
(c) greater than that of glass
(d) less than that of glass

Answer :

(a) equal to that of glass

Answer Steps :

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If a body is executing simple harmonic motion then

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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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