Question

If power of convex lens is 4D then find the focal length of the lens

Answer 1

hlo mate ✌️

P=1/f

P=1/fP=4d

P=1/fP=4d4=1/f

P=1/fP=4d4=1/fF=1/4m =0.75m

P=1/fP=4d4=1/fF=1/4m =0.75mTherefore f=75 cm

Hope it helps ❣️

Answer 2

Answer:

1/f=1/v-1 is a simple answer of this question/u