Sound WavesHard

Question

A copper wire is fixed between two rigid supports. It is stretched with negligible tension at 30oC. The speed of transverse waves in the wire at 10oC will be - (density d = 9 × 103 kg/ m3, Young′s modulus Y = 1.3 × 1011 N/m2 and temperature coefficient of expansion a = 1.7 × 10-5 /oC) : -

Options

A.210 m / s
B.110 m/s
C.90 m/s   
D.70 m/s

Solution

ᐃL = αθAy
μ = dA ∴ v = = 70m/s

Create a free account to view solution

View Solution Free
Topic: Sound Waves·Practice all Sound Waves questions

More Sound Waves Questions

A progressive wave having amplitude 5 m and wavelength 3 m. If the maximum average velocity of particle in half time per...Two tuning forks A and B lying on opposite of observer ′O′ and of natural frequency 85 Hz move with velocity...The number of possible natural oscillations of air column in a pipe closed at one end of length 85 cm whose frequencies ...Two wires are fixed in a sonometer. Their tensions are in the ratio 8:1. The lengths are in the ratio 36:35. the diamete...A sound absorber attenuates the sound level by 20 dB. The intensity decrease by a factor of :-...