Question

The speed of longitudinal wave in a metal rod having
Young's modulus 1 x 1010 N/m2 and density as 2.5 x
103 kg/m3 is
1000 m/s
2000 m/s
3000 m/s
4000 m/s​

Answer 1

Answer:

ANSWER

The speed of longitudinal waves in a solid(steel bar) is given by

v=

ρ

Y

where, Y is the Young's modulus of steel bar and ρ is the

density of steel bar.

v=

7800

2×10

11

v=

0.002564×10

10

v=0.05063×10

5

v=5063≈5100ms