SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The unit for wave speed/velocity is ____
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m/s
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m/s/s
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m*s
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m*s*s
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Explanation:
Detailed explanation-1: -Also called wave speed. Symbol v. Units are meters/second (ms-1). Velocity = Frequency ´ Wavelength.
Detailed explanation-2: -Sound waves have a speed of 343 m/s in air, while electromagnetic waves have a speed of 299 792 458 m/s or approximately 3.0 × 108 m/s in free space.
Detailed explanation-3: -Hence, the formula for calculating wave velocity is v = f × .
Detailed explanation-4: -The unit of frequency is Hertz (Hz) and 1 Hz is the reciprocal of 1 second. As an example, a wave with a period T = 0.25 s takes ¼ of a second to complete a full vibration cycle (crest – trough – crest) at a certain location and thus performs four vibrations per second. Hence its frequency is f = 4 Hz.
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