Question

Where must an object be placed in front of convex lens of focal length 20 cm to obtain a real and four times magnified image? Where will the image form?
Please solve it

Answer 1

Answer:

see hope so helpful ..

use the lens formula..

Answer 2

Answer:

Image distance =100 cm

Explanation:

m=v/u

-4=v/u

v=-4u

1/v - 1/u= 1/f

1/-4u - 1/u =1/20

u=-100/4

u=-25 cm

v=-4u

v= -4 (-25)

v=100 cm.

Please mark as brainliest answer.