Physics · May / June 2025 · Paper 11 · Question 20

A shoe shop puts a mirror on the wall so that customers can look at their shoes. The length of the mirror is 50 cm. A customer has eyes 150 cm above ground level. [diagram showing a person 150 cm tall, a mirror of length 50 cm, and the height h of the bottom of the mirror above the ground] The bottom of the mirror is at height h above the ground. What is the smallest value of h that allows the customer to see an image of his shoes in the mirror?

1. A0
2. B25 cm
3. C50 cm
4. D75 cm

As printed in the paper