The focal length of thin convex lens is _____?
The focal length of thin convex lens is _____?
پتلی محدب لینس کی فوکل لمبائی _____ ہے؟
Explanation
A thinner convex lens has a longer focal length because it bends light rays less sharply than a thicker convex lens.
A thicker convex lens has a shorter focal length as it bends light rays more strongly, bringing them to focus sooner.