A person with myopia can see objects placed at a distance of 4m.if he wants to se objects at a distance of 20m,what should be the focal length and Power of the concave lens he must wear?
It means Hey
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O.o which language?
Step-by-step explanation:
They can damage our body and our health [ Choose correct alternative of 'able to'] 1) They are able to damage our body and our health 2) They were able to damage our body and our health3) they are not able to damage our body and our health.
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