Question

con cave lens of focal length 15cm forms an image 10cm from the lens how far is the object placed from the lens find the magnification produced by the lens with the help​

Answer 1

Answer:

concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? Draw the ray diagram. So, the object is placed 30 cm away from the concave lens.

Answer 2

Answer:

1f = 1v - 1/u

1/15 = 1/v - 1/10

1/15 + 1/10 = 1/v

2+3/30 = 1/v

5/30 =1/v

1/v = 1/6