Question

is the focal length of convex lens positive or negative​

Answer 1

Answer:

Convex lens converges incident rays. Hence the rays to converge at a point in front of the lens. So image distance is positive here. We can easily clarify that the focal length is positive direction for a Convex lens while negative with concave lens.

Answer 2

Focal length is positive for a convex lens.

MARK ME AS BRAINLIEST....