Question

an object is kept 40 cm in front of a concave mirror of focal length 20cm find the position and nature of the image draw a ray diagram to show the formation of image in this case

Answer 1

u=-40cm,f=-20cm,v=?

By mirror formula,1/f=1/v+1/u

1/v=1/-20+1/40=-40+20/20x40=-20/800=1/-40

v=-40,it is inverted & Real image.

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