Question

An object is place 20cm in front of a concave lens of focal length 25 cm. Find the location and nature of image.​

Answer 1

when obj is Between pole and f so image will be using f it will made virutal and erect..

Answer 2

Focal length,f = 25cm

Object Distance, u = 20cm

Image Distance, v = ?

1/f = 1/v - 1/u

1/v = 1/25 - 1/20

1/v = -5/500

v = -100 cm