Question

an object is placed 15 cm from a concave mirror of focal lenght 25 cm what is the position of the image if the object is 2cm hight what is the height of the image

Answer 1

here object distance, u= -15cm
(to the left of mirror)
focal length, f = -25
(it is a concave mirror)
you know mirror formula.

putting these values mirror formula ,we get answer
the answer is-2/75

Answer 2

Answer:

here object distance u = -15cm

focal length f = -25cm

put this is in the mirror formula

1/-25 = 1/v + 1/-15

1/-25 - 1/-15 = 1/v

now you can solve