Question

Select One Option Correct from the following : A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, $y(x,t) = (0.01 m) \sin [(62.8 m^{-1})x ] \cos [(628 s^{-1})t]$ Assuming $\pi =3.14$ the correct statement(s) is (are)
(A)The number of nodes is 5.
(B)The length of the string is 0.25 m.
(C)The maximum displacement of the midpoint of the string, from its equilibrium position is 0.01 m.
(D)The fundamental frequency is 100 Hz.

Answer 1

b is correct I think

Answer 2

Select One Option Correct from the following : A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, $y(x,t) = (0.01 m) \sin [(62.8 m^{-1})x ] \cos [(628 s^{-1})t]$ Assuming $\pi =3.14$ the correct statement(s) is (are)

(A)The number of nodes is 5.

✴️ (B)The length of the string is 0.25 m.

(C)The maximum displacement of the midpoint of the string, from its equilibrium position is 0.01 m.

(D)The fundamental frequency is 100 Hz