Question

An object of size 5cm is placed in front of a concave mirror at a distance of 25 cm .The focal length of the mirror is 15 cm​

Answer 1

Answer:

Given : u=−25 cm f=−10 cm h o=5 cm

Using 1/v − u/1= 1/f

Or 1/v − 1/(−25) =1/ (−10)

⟹ v=−7.14 cm

Height of image hi/ho=v/u

Or hi/5=−7.14/-25

⟹ hi=1.43