MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Refraction at Curved Surfaces

A far point p...

Question

A far point person suffering from myopia is 2m from the eye. Find the the focal length and power of corrective lens that will correct his vision.

Open in App

Solution

Given,

Distance of far point x = 2 m

Focal length of the corrective lens to view distant objects correctly f = -x

= -2 m Ans.

Power of the lens P = 1/f

= 1/(-2)

= -0.5 D Ans.

Suggest Corrections

thumbs-up

9

Similar questions

Q. The near point of an elderly person in 50 cm from the eye. Find the focal length and power of the corrective lens that will correct his vision.

Q. A person needs a lens of power

- 2.5 D

for correcting his vision. What is the defect of vision that the person is suffering from? Also, find the focal length of the lens.

Q. The near point of an elderly person is

50

cm from the eye. Find the power of the corrective lens that will correct his vision.

A person suffering from myopia cannot see clearly beyond 1 m. What should be the focal length of the concave lens that will correct his vision?

Q. A man is suffering from myopia, cannot see objects beyond

10.0 m

distinctly. What should be the type of corrective lens used to restore proper vision? Find the focal length and power of the lens?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Spherical Lens

PHYSICS

Watch in App

explore_more_icon

Explore more

Refraction at Curved Surfaces

Standard X Physics

Join BYJU'S Learning Program

CrossIcon