Question

AN OBJECT OF HEIGHT 10 cm is PLACED AT A DISTANCE of 25 cm FROM CONVEX LENS of FOCAL LENGTH 15 cm. FIND POSITION, NATURE AND Size of IMAGE​

Answer 1

Step-by-step explanation:

AnswerGiven

Height of the object 5 cm.

Object Distance - 10 cm

Focal length 15 cm.

To Find -

Height of the image.

Nature of the image.

Position of the image.

Solution

Refer the attachment for the diagram.

Lena Formule 1/-1/

1/V-1-10-1/15

1/+1/10 1/15

1/ v1/15-1/10

1/v (10-15)/150

1/v=-5/150

1/v=1/30

V-30 cm

Hence, the position of the image is 30 cm in front of the lens.

The nature of the image formed is virtual and erect.

The size of the image is enlarged.

Now. We know Magnification wh

Hence, -30-10-5

3 S

h 15 cm

Hence, height of the image formed in 15