The equation of a progressive wave is given by $y = a s i n (628 t - 31.4 x)$ If the distances are expressed in cms and time in seconds, then the wave velocity will be

[DPMT 1999]

314 cm/sec

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628 cm/sec

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20 cm/sec

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400 cm/sec

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Solution

The correct option is C
20 cm/sec

$v = \frac{Co-efficient of t}{Co-efficient of x} = \frac{628}{31.4} = 20 c m / s e c$

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The equation of a progressive wave is given by y=asin (628t − 31.4x) If the distances are expressed in cms and time in seconds, then the wave velocity will be [DPMT 1999]

The correct option is C 20 cm/sec v=Co-efficient of tCo-efficient of x=62831.4=20 cm/sec

The equation of a progressive wave is given by $y = a s i n (628 t - 31.4 x)$ If the distances are expressed in cms and time in seconds, then the wave velocity will be

[DPMT 1999]

The correct option is C
20 cm/sec

$v = \frac{Co-efficient of t}{Co-efficient of x} = \frac{628}{31.4} = 20 c m / s e c$