Question

An object 2 cm high is placed at a distance of 16 cm from a concave mirror,which produces 3 cm high inverted image. What is the focal length of the mirror?Also find the position of the image.
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Answer 1

Answer:

Here h¹ = 2 cm

u = -16cm

h² = -3cm ( Image is real and inverted )

so, m = h²/ h¹ = -v/u

v = - h²/ h¹ × u

v = 3/2 × (-16)

v = -24cm

1/f = 1/v + 1/u

= -1/24 + -1/6

= -2-3/48

= -5/48

1/f = -5/48

f = -48/5

= -9.6cm

The position of the image is in front of the mirror.

Answer 2

Answer:

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