Question

An object is placed at a distance of 10cm from the convex lens having the focal length of 15cm.find the nature of image and its position

Answer 1

Focal length (f) = 15 cm

Distance of object from the convex mirror (u) = 10 cm

Image distance (v) = ?

1/v - 1/u = 1/f

1/v - 1/10 = 1/15

1/v = 1/5 + 1/10

1/v = 2 + 3 / 30

1/v = 5/30

1/v = 1/6

v = 6 cm

Image distance = 6 cm

Image distance is in positive, thus the image is formed behind the mirror, thus it's VIRTUAL and ERECT.