Question

In case of a virtual and erect image, the magnification of a mirror is :

• A. Positive
• B. Negative
• C. Unity
• D. Infinity

Answer 1

The correct option is A Positive

For any erect image, the magnification of a mirror is positive.
We know,
Magnification (M) $=\frac{\text{height of image}\left(h_i\right)}{\text{height of object}\left(h_o\right)}$
The erect image formed same side of object to the principle axis.

So, In Sign convention, Sign of object height and image height will be same.

Hence Magnification will be positive.