Question

I point
Which of the following
statements is true?
A convex lens has 4 dioptre power
having a focal length 0.25 m

A convex lens has - 4 dioptre power
having a focal length 0.25 m

A concave lens has 4 dioptre power
having a focal length 0.25 m

A concave lens has - 4 dioptre
power having a focal length 0.25 m
​

Answer 1

Answer:

2 nd one

Explanation:

please mark me as branliest answer

Answer 2

$\large\bf\blue{Answer✓}$

(a) A convex lens has 4 dioptre power having a focal length 0.25 m

$\large\bf\blue{Explanation✓}$

Positive value for focal length indicates a convex lens.