Question

When is linear magnification of a convex lens positive and when is it negative? What should be the corresponding distance of the object from convex lens of focal length 50 cm?

Answer 1

Answer:

Given:

 Focal length (f) = 50 cm

 Object distance (u) = -25cm (sign by convention)

To find :

   magnification = ?

     image distance = ?

Solving Question:

first we have to find the image distance using the formula then magnification by v/u

Formula :

Solution:

 image distance =  -50cm

Then, magnification =

⇒

Thus magnification = 2

Thus, the image distance = -50cm and magnification = 2

hope Will be help yoy