Question

an object 4 cm in height is placed 15 cm away from the concave mirror at focla length of 10 cm. At what distance image will be formed​

Answer 1

Answer:

-30

Explanation:

Focal length of the concave mirror = -10 cm

Object distance, u = -15 cm

By Mirror Formula,

1/f = 1/v + 1/u

1/-10 = 1/v + 1/-15

-1/10 + 1/15 = 1/v

-3/30 + 2/30 = 1/v

-1/30 = 1/v

v = -30 cm

Real image, 30 cm from the mirror on the same side as the object