Question

the focal length of a lens power - 2D what type of lens is this​

Answer 1

Answer:

as the power of lense is (-ve)

Therefore the type of lense is Concave lense

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Answer 2

Answer:

The power of the lens given is -2D. It has negative sign, which means that it is a concave lens. Now, the formula for the power is P = 1/f. Therefore, focal length =-50cm.

Explanation:

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