MHT CET20226 Aug 2022Morning ShiftPhysicsWaves and SoundActual
The displacement of a particle in a medium is y=10⁻⁴ [100 t+20 x+ 3 ] m , where t is in second and x is in metre. The speed of the wave is
Options
- A5 ~m / s
- B10 ~m / s
- C15 ~m / s
- D20 ~m / s
Correct answer
A. 5 ~m / s
Step-by-step solution
The equation can be written in the form of, y=y₀ ( t+k x+ ) where, =100 / s and k=20 / m The velocity of a travelling wave is given by, v= / k Hence, substituting the values, v= 100 20 =5 ~m / s