Question

an object of 5 cm in length is held 25cm away from a converging lens of focal length 10 centimetre draw the ray diagram and calculate the size nature and position of the image is formed also calculate the power of this lens

Answer 1

make the diagram of convex mirror and name and value them it's position go far in mirror

Answer 2

Hello Dear Soul ❤

Your Answer :

Height of the object, h' = 5 cm

Distance of object from conversing lens, u = 25 cm

Focal length of conversing lens, f = 10 cm

Using lens formula,

1/v - 1/u = 1/f

1/v = 1/f + 1/u

1/v = 1/10 - 1/25 = 15/250

v = 250/15 = 16.66 cm

Also for conversing lens,

h''/h' = v/u { h'' = image height }

h'' = (v/u)× h' = (16.66 × 5) / (-25) = -10/3 = -3.3 cm

Thus, The image is inverted and formed at a distance of 16.7 cm behind the lens and measured 3.3 cm.

Note : Ray diagram of this problem is given in attached file.

Glad To Help :D

Note : Give thanks to my answers n ho ske to follow vi kar lo ❤