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Q: The following is the data for an image formed by a convex mirror : Object distance = 30 cm, Size of object = 10 cm, Size of image = 2.5 cm, The focal length of this mirror is _____.
  • A. 30 cm
  • B. 20 cm
  • C. 15 cm
  • D. 10 cm
Correct Answer: Option D -
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Explanations:

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