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Which of the following statements is true?

(a)

A convex lens with power +4 D has a focal length – 0.25 m.

(b)

A convex lens with power –4 D has a focal length +0.25 m.

(c)

A concave lens with power +4 D has a focal length – 0.25 m.

(d)

A concave lens with power –4 D has a focal length – 0.25 m.


Question ID - 100028 | Toppr Answer

Which of the following statements is true?

(a)

A convex lens with power +4 D has a focal length – 0.25 m.

(b)

A convex lens with power –4 D has a focal length +0.25 m.

(c)

A concave lens with power +4 D has a focal length – 0.25 m.

(d)

A concave lens with power –4 D has a focal length – 0.25 m.

1 Answer - 5876 Votes

3537

Answer Key : (d) -

A concave lens with power –4 D has a focal length – 0.25 m.



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