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 | 15th Feb, 2014, 06:16: PM

Expert Answer:

The correct answer is option (b)
 

Answered by  | 17th Feb, 2014, 06:33: PM

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