WHICH LENS, CONCAVE OR CONVEX ALWAYS HAS POSITIVE POWER?PLS ANSWER IT IS URGENT. I WILL MARK AS BRAINLIEST
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convex............................
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That is why U is always taken as negative. For focal length, f in lens is always taken as negative for concave and positive for convex. ... It is taken as negative in Concave lens since image is formed in -X side of the Cartesian.
advaitadandekar:
I DID NOT UNDERSTAND.
CAN YOU PLEASE EXPLAIN IN AN EASY MANNER
simple convex are positive
and concave are negative
OK THANKS.BTW HOW DO YOU PUT THE FLAG?
what i can't understand why you are saying
THE FLAG AT THE END OF YOUR COMMENT.THAT IS WHAT I AM ASKING
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