Question

Aconcave lens of focal length 15 cm forms an image at 10 cm from the lens. How far is the
explom the lens Drew the ray diagram.
een age of refraction, normal. Also write the laws of reflection
Draw the toursed forage formation by conceiror​

Answer 1

Answer:

alright we got

u= ? v= 10 f = 15

1/u=1/f-1/v

= 1/ u = 1/ 15 - 1/ 10

= 10-15/150= -5/150 = - 1/30

hence the object distance is 30 cm