1.

Find the power of a lens when focallength is 20 cm.You are provided two lensof focal length 20 cm and you.Which lenswill you use to obtain more convergentlight (use P-1/8)

Answer»

Given that

f= 20cm =0.2m

Power of convergence is given by

p =1/f

So, p= 1/0.2 = 5D

Since p1=p2.

So both lenses have same convergence of refracted light.



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