Question

A converging mirror forms a real image of height 4 cm, of an object of height 1 cm placed 20cm
away from the mirror. Calculate the image distance. What is the focal length of the mirror

Answer 1

Answer:

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Explanation:

f = ?

1/v + 1/u = 1/f

1/-80 + 1/-20 = 1/f

1/f = - (1/80) – 1/20 = (-1 – 4)/80 = - (5/80)

f = - 16 cm