The focal length of a lens is negative.What kind of lens it is?

Concave

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Cannot be determined

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Convex

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Solution

The correct option is A Concave
The focal length is the distance between the optical center and the focal point or focus of the lens.

The focal length of a convex lens is positive

The focal length of a concave lens is negative

Therefore the correct answer is A, concave

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Similar questions

The focal length of a lens is (i) positive, (ii) negative. In each case, state the kind of lens.

The focal length of a lens is +150 mm. What kind of lens is it and what is its power?

The focal length of the concave lens is taken as negative.

with repect to the type of lens or mirror used, when is the focal length taken negative or positive?

For ex:- if a concave lens has a focal length of 15 cm, will it be take positive or negative while using the lens formula?

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