Question

an object is placed 20cm in front of a concave mirror of focal length 12crn.find the position and nature of the image.​

Answer 1

u=-20cm

f=-12cm

According to mirror formula,

1/v+1/u=1/f

1/v=1/f-1/u

=-1/12+1/20

=-5+3/60

=-2/60

v= -30cm

m=-v/u

=30/-20

=-1.5

Nature- real,inverted,enlarged