Question

An object $ABED$ is placed in front of a concave mirror beyond the center of curvature $C$ as shown in Fig. State the shape of the image.

• A. $|m_{AB}|<1$ and $|m_{ED}|<1$
• B. $|m_{AB}|>1$ and $|m_{ED}|<1$
• C. $|m_{AB}|<1$ and $|m_{ED}|>1$
• D. $|m_{AB}|>1$ and $|m_{ED}|>1$

Answer 1

The correct option is A $|m_{AB}|<1$ and $|m_{ED}|<1$

C means centre of curvature of the mirror.

F means principal focus .

The figure shows the object placed behind the C.

In such a case, the image is always smaller than the object.

The symbol |m| means magnification.

Magnification is defined as the ratio of the size of the image to that of object.

It's less than 1 for a smaller image.

Since AB and ED are the parts of the same object, both of them will have magnification less than 1.