how to find vocal length of concave lens ?
question no. 23
tell me the correct answer I will mark you as brainliest
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HEY DEAR HERE IS YOUR ANSWER!!!!
firstly, focal length of convex lens is always positive .
secondly, 1/v-1/u=1/f
therefore, u-v/uv=1/f
f=uv/u-v
HOPE IT HELPS YOU DEAR THANKS A LOT............
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