Calculate the power of the convex lens of focal length 20cm

1.	Calculate the power of the convex lens of focal length 20cm
Answer» Answer: so, 20 CM in metres= 20/100m=1/5 metres. power of a LENS= 1/1/1/5=5 DIOPTRES.... EXPLANATION:

Answer»

Answer:

so, 20 CM in metres= 20/100m=1/5 metres. power of a LENS= 1/1/1/5=5 DIOPTRES....

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