Given, equation of wave, y(x,t)=(0.01)[sin(62.8m−1).x][cos(628s−1).t] and π=3.14 Compare with standard equation given below, we get y(x,t)=(2a)sin(kx),cosωt ω=628s−1, k=62.8m−1 Since, k=
2π
λ
⇒ λ=
2π
k
=
2×3.14
628
∴ λ=
1
10
m (A) According to the problem, string is vibrating in its fifth harmonic frequency, so there are 5 complete loops as shown in the figure.Thus, total number of nodes =6