Question

Identify the characteristics of the images formed by convex mirrors.

• A. Are always real
• B. Are always virtual
• C. Are only real when the object is placed outside the radius of curvature
• D. Are only virtual when the object is placed inside the focal point
• E. None of the above describes the images formed by convex mirrors

Answer 1

The correct option is B Are always virtual

From mirror formula ,

$v=\frac{uf}{u-f}$ ,

by sign convention , $u=negative,f=positive$ ,

therefore , $v$ will be positive and $v$ will be less than both $u$ and $f$ , no matter what is the value of $u$ .

Now, $m=-\frac{v(+iveand<u)}{u(-ive)}<+1$ (Erect and Diminished)

A virtual (as v is +ive) ,erect and diminished image is formed behind the mirror.