Question

A needle 3.0cm in size is placed 25cm away from a concave mirror of focal length 10cm. Give the location of the image

Answer 1

Answer:

By using mirror formula

1/f = 1/v + 1/u

concave mirror

f= -ve = -10cm

u= -25cm

1/-10 = 1/v - 1/25

1/25 - 1/10 = 1/v

1/v = -3/50

v = -50/3 cm

image is inverted, real