waec model questions vol1 2021 physics
Objective • Question 12
Question 12
WAEC_MODEL_QUESTIONS_VOL1
•
2021
A converging lens forms a real image of a candle on a screen. The distance between the candle and the screen is 120 cm. The image is twice the size of the candle. Find the focal length of the lens (in cm).
Answer Options
A.
24.0 cm
Correct Answer
B.
26.7 cm
C.
20.0 cm
D.
30.0 cm
Correct Answer
B
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