Question

Distance between F1 and F2 is 20 cm. Find the power of the convex lens​ ?​

Answer 1

Answer:

What is the power of lens of focal length 20cm?

so, 20 CM in metres= 20/100m=1/5 metres. power of a lens= 1/1/1/5=5 dioptres........ therefore, p = 1/f meters

Answer 2

Answer:

power of covex lence is shorter

Explanation:

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