SATHEE: Wave Motion 4 Question 12

Wave Motion 4 Question 12

12. A copper wire is held at the two ends by rigid supports. At $30^{\circ} C$ , the wire is just taut, with negligible tension. Find the speed of transverse waves in this wire at $10^{\circ} C$ .

Given, Young modulus of copper $= 1.3 \times 10^{11} N / m^{2}$ . Coefficient of linear expansion of copper $= 1.7 \times 10^{- 5}^{\circ} C^{- 1}$ . Density of copper $= 9 \times 10^{3} k g / m^{3}$ .

$(1979, 4 M)$

apparent frequency of the source when it is moving away from the observer after crossing him? (Take, velocity of sound in air is $350 m / s$ )

(2019 Main, 10 April II)

(a) $807 H z$

(b) $1143 H z$

(d) $857 H z$

Show Answer

Answer:

Correct Answer: 12. (a)

Solution:

Using the formula $f^{'} = f (\frac{v + v_{0}}{v})$

we get, $5.5 = 5 (\frac{v + v_{A}}{v})$

and

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Wave Motion 4 Question 12

12. A copper wire is held at the two ends by rigid supports. At $30^{\circ} C$ , the wire is just taut, with negligible tension. Find the speed of transverse waves in this wire at $10^{\circ} C$ .

Answer:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Wave Motion 4 Question 12

12. A copper wire is held at the two ends by rigid supports. At 30∘C, the wire is just taut, with negligible tension. Find the speed of transverse waves in this wire at 10∘C.

Answer:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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12. A copper wire is held at the two ends by rigid supports. At $30^{\circ} C$ , the wire is just taut, with negligible tension. Find the speed of transverse waves in this wire at $10^{\circ} C$ .