jee-main 2013 Q24

jee-main · India · 22apr Not Maths

The focal length of the objective and the eyepiece of a telescope are 50 cm and 5 cm respectively. If the telescope is focussed for distinct vision on a scale distant 2 m from its objective, then its magnifying power will be:
(1) $-4$
(2) $-8$
(3) $+8$
(4) $-2$

The focal length of the objective and the eyepiece of a telescope are 50 cm and 5 cm respectively. If the telescope is focussed for distinct vision on a scale distant 2 m from its objective, then its magnifying power will be:\\
(1) $-4$\\
(2) $-8$\\
(3) $+8$\\
(4) $-2$

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