Question

A student wants to project the image of a candle flame on a screen 60 CM in front of a mirror by keeping the flame at a distance of 15 CM front. what is the distance between the object and it's image​

Answer 1

45 cm

Explanation:

Given : Object distance, u = -15cm

Image distance, v = -60cm

Distance between the object and image is calculated by,

= u - v

= -15 - (-60)

= -15 + 60

= + 45cm