Question

which lens has real focus?​

Answer 1

Answer:

convex lens has real focus

please mark it as a brainlist answer

Answer 2

Answer:

convex lens

A convex lens is said to have real focus and a concave lens a virtual focus. Why? A convex lens converge light rays at its focus therefore it is said to produce real focus whereas the concave lens diverges the light rays that seems to come from focus therefore it is virtual.