Question

An object is kept 20 cm away from a concave mirror of focal length 30 cm. If the size of the object is 2cm, find the size of the image.

Answer 1

Answer:

Here,

u= -30 cm

f= -20 cm

By using mirror formula,

1/v + 1/u = 1/f

1/v + 1/-30 = 1/-20

v= -60 cm

negative sign indicates that image is in front of the mirror

Therefore,

The distance between image and object = 60–30 = 30cm

Answer 2

Answer:

Hey mate

Explanation:

Hope it will help you