Question:medium

A concave mirror has a focal length of 15 cm. An object is placed 30 cm from the mirror. What is the image distance?

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Remember: For a concave mirror, use the mirror formula \( \frac{1}{f} = \frac{1}{v} + \frac{1}{u} \), where the object distance \( u \) is negative.
Updated On: Nov 26, 2025
  • 30 cm
  • 45 cm
  • 60 cm
  • 20 cm

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