Question

An object is parrlel of 10cm in front of concave mirror of focal length 20cm Find the position of image

Answer 1

u = - 10 cm

f = - 20 cm

By mirror formula....

1 / f = 1 / v + 1 / u

=> - 1 / 20 = 1 / v - 1 / 10

=> 1 / 10 - 1 / 20 = 1 / v

=> ( 2 - 1 ) / 20 = 1 / v

=> 1 / v = 1 / 20

=> v = 20 cm

hence the image will be formed 20 cm behind the concave mirror.

hope it helps....!!!

mark me brainliest.....!!!!