Question

What is the nature of lens if the power of that lens is (I) positive (ii) negative?

Answer 1

heya .

if the power of lens is negative it must be here concave lens .

if positive power then it mist be convex lens .

hope it help you


@rajukumar.1

Answer 2

I) if positive then convex mirror which means virtual and erect.
2)if negative then concave mirror which means real and inverted.