Question

At what distance an object should be placed in front of a convex lens of focal length 12 cm so as to get triple sized image of it? ​

Answer 1

f = 12 cm

m = 1

m = v/u = 1

⇒ v = u

Lens formula : 1/v – 1/u = 1/f

Putting the value of v, u and f,

1/u – 1/-u = 1/12 (image distance is negative)

2/u = 1/12

U = 24 cm

The object should be placed at a distance of 24 cm to from the lens (on the left side).

Tqsm for ur answer dude☺️

l hope it will help u ☺️

Answer 2

Answer:

I hope it will help you

Explanation:

thanks for asking questions