Question

The diagram below shows an image formed at a distance 36 cm from the lens LL' of focal length 12 cm. With respect to this answer the questions that follow. ​

Answer 1

The lens LL of focal is the between$12 cm$ to $24 cm$ from the lens, $+8.33D,-18cm.$

Explanation:

1.The position of the object on the left hand side should be in the between $12 cm to 24 cm$ from the lens.

2.power of this lens is $+8.33D$

3.The object distance with sign convention is $-18cm$.