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Q. No.The pressure wave \(P=0.01 \sin (1000 t-3 x) ~\text{Nm}^{-2},\) corresponds to the sound produced by a vibrating blade on a day when the atmospheric temperature is \(0^\circ \text{C}.\) On some other day, when the temperature is \(T,\) the speed of sound produced by the same blade and at the same frequency is found to be \(336~\text{m} \text{s}^{-1}.\) The approximate value of \(T\) is:
1. \( 4^{\circ} \text{C} \)
2. \(12^{\circ} \text{C} \)
3. \(11^{\circ} \text{C} \)
4. \(15^{\circ} \text{C} \)
Subtopic: Speed of Sound |
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JEE
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Sound travels in a mixture of two moles of helium and \(n\) moles of hydrogen. If RMS speed of gas molecules in the mixture is \(\sqrt 2\) times the speed of sound, then the value of \(n\) will be:
1. \(1\)
2. \(2\)
3. \(3\)
4. \(4\)
1. \(1\)
2. \(2\)
3. \(3\)
4. \(4\)
Subtopic: Speed of Sound |
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For a medium, it is given that: Young’s modulus \(=3.2 \times 10^{10}\) N/m2, density \(=8000\) kg/m3. What is the speed of sound in this medium?
1. \(1000\) m/s
2. \(2000\) m/s
3. \(500\) m/s
4. \(4000\) m/s
1. \(1000\) m/s
2. \(2000\) m/s
3. \(500\) m/s
4. \(4000\) m/s
Subtopic: Speed of Sound |
86%
From NCERT
JEE
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Q. No.
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