Question

(1)
(ii)
سورج سے گری تو ملتی ہے پانی کیسے مانتا ہے؟
چشمہ کسے کہتے ہیں؟​

Answer 1

Answer:

Height h of the object =-0.05m

object distance u =-0.5m

Radius of curvature =0.2m

let V be the position of the image,

But, R= 2f, where f is the focal length of the concave mirror

f =R/2

f =0.2/2=-0.1m [-ve for concave mirror ]

using the mirror formula

1/V +1/u=1/f

1/V=1/f-1/u

1/V=(1/-0.1)-(1/-0.5)

1/V=1/0.51/0.1

1/V=2-10

1/V=-8

V=1/-8

V=-0.125m

hence the image is formed at a distance of 0.125m from the mirror

let the height (size) of the image formed b H

H/h=-V/u

H=(V x h/u.) [-ve sign get cancelled ]

H=-0.125x0.05/-0.5

H=0.0125m