Question

an object of height 8cm is placed at a distance of 40cm in front of a concave mirror of focal length 10 cm . find the position and nature of the image formed.​

Answer 1

Answer:

Explanation:From mirror formula

1/f=1/v+1/u

-1/10cm=-1/40+1/v

-40/3=v

We also know that

Height of image/Height of object=-v/u

Height of object=-8cm/3

=-2.67cm

Negative sign shows that image is real and inverted

Image is formed at -40/3cm .Negative sign tells that iimage is formed before principal axis

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