Question

when object is placed at 12 centimetre in front of concave mirror whose focus is 8 find the image distance ?​

Answer 1

Answer:

-24 cm

Step-by-step explanation:

u=-12, v=?, f=-8

1/f=1/v+1/u     (by mirrors formula)

1/-8=1/v+1/-12

1/12-1/8=1/v

2-3/24=1/v

-1/24=1/v

v=-24 cm

Answer 2

Answer:

1/f=1/u+1/v

v=24

Step-by-step explanation:

1/f=1/u+1/v

1/8=1/12+1/v

1/v=1/8-1/12

1/v=12-8/96

v=96/4

v=24