1.

a doctor has prescribed a corrective lens of power 1.5D .find the focal length of this lens.is the prescribed lens converging or diverging

Answer»

Answer:

EXPLANATION:power of the lens= +1.5D

Using P=100/f

f=100/p

f=100/1.5

=1000/15= 66.67m

As the focal LENGTH is POSITIVE, it is CONVEX lens.

Hence, It is a CONVERGING lens.



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