Question

For an aluminium the modulus of rigidity is 2.1×10^10 N/m^2 and density is 2.7×10^3 kg/m^3. Find the speed of transverse waves in the medium.

(a) 27.9×10^3 m/s

(b) 2.79×10^3 m/s

(c) 25.14×10^3 m/s

(d) 24.1×10^3 m/s

I got this question in quiz.

This interesting question is from Waves topic in section Quantum Physics of Engineering Physics I

Answer 1

Right choice is (b) 2.79×10^3 m/s

Easy explanation: Speed = √(Ƞ/ƿ)

Speed = 2.79×10^3 m/s.