CameraIcon

SearchIcon

MyQuestionIcon

143

You visited us 143 times! Enjoying our articles? Unlock Full Access!

Refraction at Curved Surfaces

A child sitti...

Question

A child sitting at the backbench of a classroom is unable to see the letters on the board clearly. What is the defect of the eye of the child? How can it be remedied? Draw its ray diagram.

Open in App

Solution

Myopia or Nearsightedness. This can be rectified by using a concave lens of suitable power.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A student finds the writing on the blackboard as blurred and unclear when sitting on the last desk in the classroom. He, however, sees it clearly when sitting on the front desk at an approximate distance of 2 m from the blackboard. Draw ray diagrams to illustrate the formation of the image of the blackboard writing by his eye-lens when he is seated at the (i) last desk (ii) front desk. Name the kind of lens that would help him to see clearly even when he is seated at the last desk. Draw a ray diagram to illustrate how this lens helps him to see clearly.

Q. (a) Draw a diagram to show the formation of image of a distant object by a myopic eye. How can such an eye defect by remedied?
(b) State two reasons due to which this eye defect may be caused.
(c) A person with a myopic eye cannot see objects beyond a distance of 1.5 m. What would be the power of the corrective lens used to restore proper vision?

Q. A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?

Q. A student sitting at the back of the classroom cannot read clearly the letters written on the blackboard. What advice will a doctor give to her? Draw ray diagram for the correction of this defect.

Q. An old man cannot see objects closer than 1 m from the eye clearly. Name the defect of vision he is suffering from. How can it be corrected? Draw ray diagram for the (i) defect of vision and also (ii) for its correction.

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