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Modern Technology in Electronics

what is the s...

Question

what is the speed of 1) light ? 2) sound ? 3) electric current ?

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Solution

Speed of light is 3×10⁸ m/sec.
Speed of sound is 340 m/sec
Speed of current is same as that of drift velocity of electron.

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Q. The speed of electric current is nearly the same as the speed of light.

Q. The speed of sound is

{330 m s}^{- 1}

and that of light is

3 \times 10^{8} {m s}^{- 1}

. Find the ratio of speed of sound to that light.

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330 m s^{- 1}

and that of light is

3 \times 10^{8} m s^{- 1}

. The ratio of speed of sound to that of light is approximately

1 : 10^{6}

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Q. Consider three sound waves of frequencies as given below.
Sound 1: 50 Hz.
Sound 2: 100 Hz.
Sound 3: 200 Hz.
Which of the following statements is true regarding the speeds of these sounds through the same medium?

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3 \times 10^{8} m / s

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The speed of light is almost

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