Physicseasy · Past Paper
The unit of power of a lens is:
AMeter
BWatt
CDioptre
DJoule
✓ Correct Answer: C — Dioptre
Power of a lens is measured in Dioptres (D), which is the reciprocal of focal length in meters.
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✓ Correct Answer: C — Dioptre
Power of a lens is measured in Dioptres (D), which is the reciprocal of focal length in meters.
Share this question