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Question

Physics Question on Ray optics and optical instruments

In the displacement method of l1l_1 and l1l_1 be the sizes of two images, then the size of the object is:

A

l1l2\sqrt{l_1l_2}

B

l1l2l_1-l_2

C

l1l2\sqrt{\frac{l_1}{l_2}}

D

l1+l22\frac{l_1+l_2}{2}

Answer

l1l2\sqrt{l_1l_2}

Explanation

Solution

The correct answer is option (A): l1l2\sqrt{l_1l_2}