Question

An object of 5 cm length is placed at a distance of 30 cm in front of a concave

mirror of focal length 20 cm. Find the position and size of the image formed.​

Answer 1

Hello

here's your answer

As per question, size of a object, h = +5 cm;

focal length of the concave mirror, f = -15 cm

and object distance, u = -30 cm

1/v + 1/u = 1/f, hence, we have

1/v = 1/f - 1/u = 1/(-15)-1/(-30)

= -1/15+1/30 = -1/30

v = -30 cm

m = h'/h = -v/u

size of the image, h' = -v/u × h

= (-30)/(-30)×5

= -5cm

glad help you

it helps you

thank you,

Answer 2

Answer:

$- 10 \: cm \\ hope \: its \: help \: you$