Question

an object is placed at a distance of 18 cm from a concave mirror of focal length 10 cm find the nature and position of image​

Answer 1

u=-18cm

f=-10 cm

v=?

1/v+1/u=1/f

1/v=1/f - 1/u

1/v=1/-10 - 1/-18

1/v=-9+5/90

1/v=-4/90

1/v=1/-22.5

v=-22.5/1=22.5cm

nature =real and inverted