Question

An object 5 cm in length is held 25 cm away from a canverging lens of focal length 10 cm .Draw the Ray diagram and find the position , size and the nature of image formed

Answer 1

Answer:

size of the image 16.66cm

position of image 83cm

nature of image virtual erect enlarged

Answer 2

Answer:

Image, v = 16.67 cm

Nature : Real & inverted.

Explanation :

Using Lens Equation,

1/f = 1/v - 1/u

1/ 10 = 1/v + 1/ 25

1/v = 1/(10) - 1/(25)

1/v = 5 - 2 / 50

1/v = 3/50

v = 50/3

v = 50/3 v = 16.67 cm

Magnification = - v/u = hi/ho

16.67/25 = - hi/5

hi = - 3.3

Image is real, inverted and smaller than the object.