1.

For a particular glass lens f = - 2 m. Only this much data was provided to a student. He was told to calculate the power of lens and to find out type of lens given to him. His answer must be _____

Answer»

Power:+ 2 DIOPTRE, Convex LENS
Power:+ 1 dioptre, Concave lens
Power: - 0.5 dioptre, Concave lens
Power: - 0.5 dioptre, Convex lens

Answer :C


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