Question

The near point of a hypermetropic eye is at 75cm from the eye. what is the power of the lens required to enable him to read clearly a book held at 25cm from the eye.???
guys, please answer this question .please????

Answer 1

hey dear

here is your answer..

• THE LENS USED IN THE QUESTION IS CONVEX LENS.
• v = -75
• u = 25
• 1v+1u=1f
• 1−75+125=275
• P=1f
• 100(75/2)
• =2.66

hope it helps..

Answer 2

The power required for the correction is
P=1/F
=1/0.75
=1.33 D
Therefore power required for correction of the lebs is +1.33 D