Physics · Optics - Spherical Lenses
An object is placed in front of a concave lens at a distance d. An erect image of the object is formed at d/3. If the focal length of the lens is 15 cm, then d is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120 cm
- 215 cm
- 330 cm✓
- 425 cm
Correct answer
30 cm
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