Question

An object of height 2.0 cm is placed at a distance of 30 cm from the pole of a concave mirror of focal length 15 cm. Draw a ray diagram to show image formation and find the position, nature and size of the image formed

Answer 1

Answer:

Explanation:

concave mirror

u=-30

f=-15

1/f=1/v+1/u

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

1/v=1/30-1/15

1/v=-1/2

V=-2

image is formed 20cm from the pole in front of the lens

nature:

m=-v/u

=-(-2)/-20

=-10

so the image is real, inverted

Hope it will help you

Answer 2

concave mirror

u=-30

f=-15

1/f=1/v+1/u

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

1/v=1/30-1/15

1/v=-1/2

V=-2

image is formed 20cm from the pole in front of the lens

nature:

m=-v/u

=-(-2)/-20

=-10

Hope it helps u