Q2 of 70 Page 11

What is short sight? How can it be corrected?

If a person can see nearer objects clearly but not the far objects, then he is affected by short sight. It can be corrected using a suitable concave lens.

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1 Why is eye lens of telescope smaller than objective lens? 3 Give the condition required to achieve a larger magnification of a small object by a compound microscope ? 4 A person having a myopic eye used the concave lens of focal length 50cm. What is the power of the lens? 5 Which part of human eye helps in the perception of colours?