Question

A doctor prescribed corrective lens of power +1.5

d.find thee focal length of the lens.is the prescribed lens diverging or converging

Answer 1

P = 1/f .
Therefore f = 1/P
Therefore focal length = 1/1.5
Focal length = 0.6666666666666667 metres = 0.67 metres = +67 centimetres.

Since the focal length is positive , the given lens is a CONVEX LENS as only convex lens have positive focal length.



Hope this helps......
Any doubts, comment down or message me.

Mark my answer as brainliest if it helped.

- Mâhêshwáràñ.

Answer 2

P = 1 / f
+1.5 = 1/ f
f = 1 / 1.5 m
f = 10 / 15 m
f = 2/3 m

Therefore, f = + 0.67m
Thus, the the lens prescribed by the doctor is a converging in nature