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A student is performing experiment to measure focal length of a convex lens by focussing distant object. First of all focusses a distant window of the laboratary on the screen and then tries the same for a distant tree. He will now obtain sharp image by (options are given in the description)
Asked by Hari Rajagopal Anayath | 15 Feb, 2014, 06:16: PM
answered-by-expert Expert Answer
The correct answer is option (b)
 
Answered by | 17 Feb, 2014, 06:33: PM

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