Question

Draw a ray diagram to show the formation of image for the object of the height 1cm placed at 5cm distance in front of concave mirror having radius of curvature 5cn and also find magnification

Answer 1

Explanation:

h=1cm

u=-5cm

r=5cm now r=2f then f=2.5

as it is a concave mirror so it's f=-2.5cm

using formula of mirror

1/f=1/v+1/u

1/-2.5=1/v-1/5

1/v=1/2.5+1/5

1/v=5+2.5/10.5

1/v=75/105=15/21

v=0.71

magnification

m=h×v/u

ans=-0.142