Physics · Light - Reflection and Refraction
Which of the following is NOT correct according to the sign convention for spherical lenses?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Focal length of a convex lens is taken as negative.✓
- 2Distances measured to the right of the optical centre are positive.
- 3Focal length of a concave lens is taken as negative.
- 4Object is always placed on the left of the lens.
Correct answer
Focal length of a convex lens is taken as negative.
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