Question

An object of height 2.5 cm is placed at a distance of 15 cm from the optical centre 0 of a convex
lens of focal length 10 cm. Draw a ray diagram. Also, find the position, nature and size of the image
formed.
I 100.​

Answer 1

Answer:

20..230-&000 so

Explanation:

qualified for

Answer 2

Answer:

Given,

Object Size (h)= 2.5 cm

Focal Length (f)= 10cm

Object distance (u)=15cm

We know, 1/f= 1/v- 1/u

1/10=1/v-(1/15)

1/v= 1/30

v= 30 cm

We know, h/O = v/u

h/2.5= 30/(-15)

h= -2×2.5

h= -5 cm

Therefore, the image distance from the lens is 30 cm and the image is magnified, real and inverted and the size of the image is 5 cm.