Question

An object is kept 40 cm in front of concave mirror focal length 20 CM find the position nature of image dry diagram information of image in this case

Answer 1

We will use the mirror formula.

1/f = 1/u + 1/v

f = 20 cm

v = 40 cm

1/20 = 1/u + 1/40

1/u = 1/20 - 1/40

1/u = (2 - 1) / 40

1/u = 1/40

The image distance is 40 cm

Since the image position is positive the image is real.

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