A converging lens and a screen are placed 20 cm and 80 cm respectively from an object in a straight line so that a sharp image of the object is formed on the screen. If the object is 3cm high. Calculate the height of the image formed
-
A.
1 cm -
B.
9cm -
C.
12cm -
D.
15cm
Correct Answer: Option B
Explanation
(frac{v}{u} = frac{hi}{ho} = frac{60}{20} = frac{hi}{3})
hi = 9cm