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If the amplitude of the waves coming from a light bulb decreased, which would you expect to happen?

AThe intensity of the light would increase.
BThe light waves would travel faster.
CThe brightness of the bulb would decrease.

Verified Answer :

AL2006

The amplitude of the electromagnetic waves coming from
a light bulb is exactly an indication of the energy carried by
the waves. 

If their amplitude decreases, then the waves are carrying less
energy.  The brightness of the light decreases, AND the bulb
runs cooler, because it produces less heat.

C) The brightness of the bulb would decrease. Hope I helped!

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