Question

'Diopter' is the unit of measurement of __________

Options

• Heat

• Sound

• Energy

• power of a lens

Answer 1

power of a lens

Explanation: A diopter is the unit of measurement of the optical power of a lens or a curved mirror. In terms of numerical value, it is equal to the reciprocal of the focal length of a lens of a curved mirror measured in meters. In other words, a diopter is the unit of reciprocal length.