Question

An object of height 2.5cm is held at 30 cm from a spherical mirror of focal length 20 cm .The image is obtained on a screen. The screen distance and height of the image *

Answer 1

Answer:

Explanation:

Height of object, ho =2.5cm, object distance u=−30cm, focal length f=−20cm

Now, from mirror formula:- $\frac{1}{f} =\frac{1}{v} +\frac{1}{u}$