Question

A convex lens of focal length 0.12 m produces an image which is 3 times as long as the object.find the dist myance between the object and the lens for a real image.

Answer 1

Answer:

u=16 cm and v =48 cm. So place object at 16cm from the lens and a magnified image of 3 times will appear at 48 cm from the lens in the other side of the lens.

Explanation:

• The minimum distance between an object and its real image in a convex lens is 4f.
• magnification "m"=-2times. 40+2u=-20. so if you object be placed at the distance of 30 cm then the two times magnified image will be obtain