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The objective of a telescope after focusing for infinity is taken out and a slit of length
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The objective of a telescope after focusing for infinity is taken out and a slit of length L is placed in its position. A sharp image of the slit is formed by the eyepiece at a certain distance from it on the other side. The length of this image is l. Then the magnification of the telescope is ?? 1) l / 2L 2) 2L / l 3) l / L 4) L / l
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Jammalamadaka
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Joined: 23 Nov 2008
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22 Apr 2009 11:06:17 IST
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