The displacement y of a particle in a medium can be expressed as, y = 10⁻⁶ sin (100t + 20x + (π)/4) m where t is in second and x in meter. The speed of the wave is

Oscillations and Waves: JEE Main 2004 Physics question

JEE Main 2004 · Annual, Paper 1 · Q8476

JEE Main 2004Annual, Paper 1PhysicsEasyOscillations and Waves185× since 2002

The displacement

y

of a particle in a medium can be expressed as,

y = {10^{ - 6}}\,\sin

\left( {100t + 20x + {\pi \over 4}} \right)

m

where

t

is in second and

x

in meter. The speed of the wave is