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
- 1 cm
-
9cm
- 12cm
- 15cm
The correct answer is: B
Explanation
\(\frac{v}{u} = \frac{hi}{ho} = \frac{60}{20} = \frac{hi}{3}\)hi = 9cm