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Sahay Sir > Question Answers > AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 16 - Waves > Two lens of focal length −20cm and +10cm are put in combination, find the power of the combination.

Two lens of focal length −20cm and +10cm are put in combination, find the power of the combination.

find the power of the combination. Two lens of focal length −20cm and +10cm are put in combination