Question

of power
type or lens is th
17. A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of
the lens. Is the prescribed lens diverging or converging?​

Answer 1

Focal length = 0.66m and lens is converging lens

Explanation:

F = 1/P

= 1/1.5 = 10/15 = 2/3

F = 0.66 meters.

As the sign of the power is plus , it is a convex lens (converging lens)

I HOPE THIS HELPS YOU

Answer 2

Answer:

• The focal length of the lens is 0.67
• The prescribed lens is converging

Explanation:

f= 1/P

f= 1/1.5

= 0.67