Question

An image is formed at distance of 30 cm from the centre of convex lens of focal length 15 cm. The distance of the object is
a. 2 cm

b. 15 cm

c. 30 cm

d. 45 cm​

Answer 1

Answer:

The image is formed on same side of the object. Explanation:Now since the object is placed on 30 cm . It means the object is placed at 2f because f=15cm . In this case when the object is placed at 2f the image in concave lens will form b/w f and o .2 cm

Answer 2

30 cm is the answer.
Here is the solution