Question

why is a convex lens of a small focal length preferred for a magnifying glass ​

Answer 1

Answer:

A convex lens is also used as a simple microscope. The object is kept between the focal length and mirror so that a virtual, erect and magnified image is formed. Smaller focal length has more power and is suitable for larger magnification. This is why convex lens is used.

Answer 2

Answer:

1. magnified image

2. virtual & erect image

3. more power

4. suitable for larger magnification