Question

A single converging lens is used as a simple microscope. In the position of maximum magnification ,

• A. the object is placed at the focus of lens
• B. the object is placed between lens and its focus
• C. the image is formed at infinity
• D. the object and image subtend the same angle at the eye

Answer 1

Answer: (B), (D)

The correct options are
B the object is placed between lens and its focus
D the object and image subtend the same angle at the eye

In a convex lens, maximum magnification is obtained when the object is placed in between the centre and the focus of the lens. As the object is moved closer to the center, the image gets more and more magnified. Also we see that whatever is the position of the object between the focus and the center, both the image and the object subtend the same angle at the eye of an observer.