Physics Review Question

Unit: Waves
Year: 1991 Question#: 43
Question: To the nearest order of magnitude, how many times greater than the speed of sound is the speed of light.
(1 ) 104
(2 ) 106
(3 ) 1010
(4 ) 1012

What is this question really asking?


Explanation by: Eric D (partly)

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Answer 1
104

INCORRECT

How does 3 x 102m/s compare to 3 x 108m/s? return to top























Answer 2
106

CORRECT


The speed of sound (3 x 102m/s) must be multiplied by 106 in order to get the speed of light (3 x 108m/s).
return to top



























Answer 3
1010

INCORRECT

How does 3 x 102m/s compare to 3 x 108m/s? return to top


























Answer 4
1012

INCORRECT

How does 3 x 102m/s compare to 3 x 108m/s? return to top


























What's this question really asking?

What is the speed of light divided by the speed of sound? (consult reference table for the values) return to top

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