Which of the following correctly, describes the image of an object, 4cm from a diverging...
PHYSICS
JAMB 1991
Which of the following correctly, describes the image of an object, 4cm from a diverging lens of focal length 12cm?
- A. The image is virtual, 3cm in front of the lens
- B. The image is real, 6cm behind the lens
- C. The image is virtual, 6cm in front of the lens
- D. The image is real, 3cm in front the lens
Correct Answer: A. The image is virtual, 3cm in front of the lens
Explanation
F = \(\frac{uv}{u + v}\)
F = -ve
-12 = \(\frac{4 \times v}{4 + v}\)
v = -3cm
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