A astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective, the lenses must be separated by a distance

Question:

Options :

(a) 37.3 cm
(b) 46.0 cm
(c) 50.0 cm
(d) 54.0 cm

Answer :

(d) 54.0 cm

Answer Steps :

step 1

step 2

step 3

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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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