Question

A 5cm tall object is placed at a distance of 20cm and focal length 30cm.Find position and nature of image formed by concave lens.Just tell the ans

Answer 1

1/v - 1/(-20 )=1/(-30)

1/v=-1/20-1/30

=-50/20×30

v =-60/5=-12cm

so virtual and diminished at 12 cm

size=5×12/20=3cm