Question

The paritcle displacement (in cm) in a stationary wave is given by `y(x,t)=2sin(0.1pix)cos(100pit)`. The distance between a node and the next antinode is
A. 2.5 cm
B. 5 cm
C. 7.5 cm
D. 10 cm

Answer 1

Correct Answer - B
`k=0.1pi therefore k=(2pi)/(lamda)=0.1pi`
`(2pi)/(lamda) = 0.1 pi therefore lamda=20cm`
The distance between node and next antinode is
`lamda/4=20/4=5cm`