Physics · Light - Reflection and Refraction
When an object is kept in front of a concave mirror of focal length 10 cm, a real image is formed at a distance of 20 cm in front of the mirror. According to Cartesian sign convention, the object distance is _______.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1-30 cm
- 2-10 cm
- 3-20 cm✓
- 4-5 cm
Correct answer
-20 cm
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