Question

a convex lens of focal length 20 centimetre forms an image of an object placed at a distance of 25 m from its image distance also find the nature and size of the image of the object is 2 centimetre into representation​

Answer 1

the image is real and inverted.

Hope it helps ✌✌❤

Answer 2

1/v - 1/U=1/f

1/v - 1/-25 =1/20 (putting value as per sign convention)

1/v=1/20 - 1/25

=25-20/250

=5/250 cm

=1/50cm

V= 50 cm in front of lens