Question

In a photographic camera fitted with a convex lens, which of the following types of images will be formed on the film?

• A. Imaginary and erect
• B. Inverted and real
• C. Erect and real
• D. The type of image formed will depend on the distance between the lens and the object

Answer 1

The correct option is B Inverted and real

REF.Image.

Since it is a camera the object generally cannot be virtual.

Applying lines formula :-

$\frac{1}{V}-\frac{1}{(-u)}=\frac{1}{(-f)}$

(Here -u and -f have been used because the formula contains the coordinates of object and focus)

$\Rightarrow V=-\left(\frac{uf}{u+f}\right)$

$\Rightarrow V=-ve$

This means that the image will be Real

Now $\Rightarrow m=-\frac{v}{u}$

$\Rightarrow n=\frac{-\left(\frac{-uf}{u+f}\right)}{-u}$

$\Rightarrow m=-ve$

Thus, the image will be inverted

Ans (B)