Pl. Provide answer of Q-4

Pl. Provide answer of Q-4 o -0

Dear Student,

t h e g i v e n w a v e e q u a t i o n Y = 5 \sin 10 π (t - 0.01 x) k = 0.01 \times 10 π = 2 π / λ \Rightarrow λ = 20 m h e n c e p h a s e d i f f e r e n c e i n 10 m = \frac{2 π}{λ} \times 10 = π

option B is correct