Question

10. A concave lens has focal length of 15 cm. If image at 10 cm left from the lens, the object is placed at
a) 30 cm right of the lens
b) 30 cm up of the lens
c) 30 cm left of the lens
d) 30 cm below the lens​

Answer 1

Explanation:

c part

30 cm left of the lens

Answer 2

Answer:

c) 30 cm left of the lens

Explanation:

Since the lens the concave, the image so formed is virtual.

hence the image will be formed 30 cm left of the lens.