A child has near point at `10 cm`. What is the maximum angular magnification the child can have with a convex lens of focal length `10 cm` ?

To obtain a magnification of -2 with a convex lens of focal length 10 cm, the object should be placed:

A convex lens is of focal length 10 cm. What is its power?

What is the position of image when an object is placed is at a distance of 10 cm from a convex lens of focal length 10 cm?

An object is placed at a distance of 10cmm to the left on the axis of convex lens A of focal length 20cm. A second convex lens of focal length 10cm is placed coaxially to the right of the lens A at a distance of 5cm from A. Find the position of the final image and its magnification. Trace teh path of the rays.