use of ''CAN''|| #shorts #englishspeaking

State whether the following statement is true or false : Short-sightedness can be cured by using concave lens.

The power of a lens used by short sighted person, is -2D. Find the maximum distance of an object which he can see without spectacles.

Assertion Each taxonomic group can have two or more names. Reason Name should be short, precise and easy to pronounce.

Complete the following sentences : (a) A short-sighted person cannot see……….. objects clearly. Short-sightedness can be corrected by using………….lenses. (b) A long-sighted person cannot see……….. objects clearly. Long-sightedness can be corrected by using...........lenses.

What kind of lens is used to correct (a) short-sightedness (b) long-sightedness ?