Question

an object is placed at the following distance from a convex lens of focal length 15CM. (1).35cm( 2). 30cm (3).20cm (


4).10cm . which position of the object will produce an mage of same size as that of the object

Answer 1

Answer:

30 cm

Explanation:

image of same size is produced when the object is at a distance of double the focal length of lens

therefore,the object is at 2 × focal length = 30cm