A converging lens and a screen are placed 20 cm and 80 cm respectively from...

WAEC 2008

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

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Correct Answer: Option B

Explanation

\(\frac{v}{u} = \frac{hi}{ho} = \frac{60}{20} = \frac{hi}{3}\)

hi = 9cm

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A converging lens and a screen are placed 20 cm and 80 cm respectively from...

Correct Answer: Option B

Explanation

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