Question

4. What is the nature of mirror having focal length -15 cm ?

Answer 1

Answer:

since the focal length is -ve it means radius of curvature is negative and that is the case with concave mirror

So concave mirror is the correct answer

mark brainliest

Answer 2

Answer:

Explanation:

Nice and logical question

Since focal length is negative hence the mirror is concave considering the measurement in the opposite direction to the incident rays.