Question

An object, 5cm in size, is placed 30cm in front of a concave mirror of focal length 15 cm. find the position, size and nature of the image formed. draw a ray diagram to show the image formation.

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,

@vaibhavhoax
#born with attitude

Answer 2

Hey mate...

here's ur answer

Height of the object ( h ) = +5 cm

focal length of the mirror (f) = -15 cm

Distance ( u ) = -30 cm

Using the formula......

1/v + 1/u = 1/f

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

Hope it helps ❤️