Class X Sciences
[papers from previous years]

A student has obtained an image of a distant object on a screen to
determine the focal length F1
of the given lens. His teacher, after checking the image, gave him
another lens of focal length F2
and asked him to focus the same object on the same screen. The
student found that to

1

Answers

2015-05-03T21:02:27+05:30
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