What is amplitude?
a: amplitude is the height of a wave
b: amplitude is the number of complete waves that pass a point in a second
c: amplitude is the time it takes for one complete waves to a given point
d: amplitude is the distance between two crest or two troughs

What is amplitude?

A: amplitude is the height of a wave  

B: amplitude is the number of complete waves that pass a point in a second

C: amplitude is the time it takes for one complete waves to a given point  

D: amplitude is the distance between two crest or two troughs

A. The height of a sound wave

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a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.