Physics · Ray Optics
To obtain a virtual and erect image by reflection from a concave mirror of focal length 20 cm, the object should be placed at a distance of:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Greater than 40 cm
- 2Between 0 cm and 20 cm✓
- 3Between 20 cm and 40 cm
- 4Exactly 20 cm
Correct answer
Between 0 cm and 20 cm
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