An Experiment to Measure the Speed of Light Uses an Apparatus

question 20

Multiple Choice

An experiment to measure the speed of light uses an apparatus similar to Fizeau's.The distance between the light source and the mirror is 10 m, and the wheel has 800 notches.If the wheel rotates at 9000 rev/s when the light from the source is extinguished, what is the experimental value for c (in m/s) ?

• A)2.94* 108
• B)2.92 *108
• C)2.88 * 108
• D)2.98 * 108
• E)3.01 *108

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Definitions:

Teratogens

Agents that can cause congenital anomalies or increase the incidence of an anomaly in the population if exposure occurs during pregnancy.

Proximodistal Trend

The pattern of development in which growth starts at the center of the body and moves towards the extremities.

Physical Development

The biological growth and maturation process in humans, including motor skills development and changes in body size and strength.

Hands And Fingers

The parts of the human body at the end of the arms, consisting of the palm and digits, used for grasping and manipulating objects.