A beam of light converges at a point P. Now convex lens of focal length 20 cm placed the path of the convergent beam 12 cm from the point at which the beam converges now

The correct option is A 7.5 cm right side of the lens

The correct option is A.

Given,

Object distance, $u=+12cm$ (virtual object)

The focal length of the convex lens, $f=20cm$

Image distance $=v$

Applying lens formula

$\frac{1}{f}=\frac{1}{v}-\frac{1}{u}$

Therefore, putting the values and solving the equation,

$\frac{1}{20}=\frac{1}{v}-\frac{1}{12}$

We get $v=\frac{60}{8}=7.5cm$

Thus, the image is formed $7.5cm$ away from the lens, toward its right.