Question

an object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm draw a ray diagram gor the form of image calculate the image distance state 2 characteristics of the image formed​

Answer 1

u=-10 cm

f=+ 20 cm

v= ?

1/v + 1/u = 1/f

1/v = 1/f-1/u

= 1/20 - 1/-10

= 30/200

= 3/20

1/v = 3/20

3v = 20

v = 6.66

The image is virtual,erect and enlarged.

Hope it helps you