Vikas who is having eyesight consulted an Opthalmologist. He suggested to use concave lens. Then what is the nature of defect Vikas suffering from ? How the defect will be corrected ?

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?

An eye specialist suggested a+2D lens to the person with defect in vision. Which kind of defect in vision does he have ? Draw the diagrams to show the defect of vision and its correction with a suitable lens.

Revathi is a front bench student . She is unable to draw the picture drawn on the blackboard. She got permission from the teacher and sat in the back row. What could be the kkdefect that Revathi is suffering from ? Draw the diagram, which shows the correction of the above defect ?

How will you calculate the focal length of a biconvex lens that is used to correct the defect f hypermetropia ? Explain it mathematically.

Doctor advised to use a lens of - 2D for Karthik. By above statement what information you can give ? Explain the eye defect and also how you will correct it.

A boy who is suffering from eye defect has been given a prescription as -2D. Based on the information given, answer the question. Identify the eye defect he is suffering .

A boy who is suffering from eye defect has been given a prescription as -2D. Based on the information given, answer the question. Write the nature and focal length of the lens.

A man suffering from short-sight is unable to see objects distinctly at a distance more than 2m . The power of lens required to correct this defect should be

The near point of a Hypermetropic eye is 1 m. What is the nature and powe of the lens required to correct this defect ? (The near point of the normal eye is 25 cm)