Some Objects Appear Brighter Than Others

question 97

Multiple Choice

Some objects appear brighter than others. Which of the following determines the brightness of an object?

• A) The visible spectrum of light
• B) How much light is reflected by the object
• C) Whether the colour mixing is additive or subtractive
• D) The colour of the iris

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Definitions:

Electro-Magnets

Magnets created by passing an electric current through a coil of wire surrounding a metal core.

Magnetic Pole Fields

Invisible regions around a magnet where magnetic forces are exerted, characterized by north and south poles.

Squirrel Cage

A type of rotor found in induction motors, characterized by its cylindrical shape with conductive bars running the length and connected by rings at both ends, resembling a squirrel cage.