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An object is placed 10cm in front of a concave mirror of focal length 15cm....

Physics
JAMB 1988
An object is placed 10cm in front of a concave mirror of focal length 15cm. What is the position and nature of the image formed?
  • A. 30cm and virtual
  • B. 6cm and real
  • C. 6cm and virtual
  • D. 30cm and real
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Correct Answer: Option A
Explanation
F = \(\frac{uv}{u + v}\)

15 = \(\frac{10 \times v}{10 + v}\)

v = -30cm
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