Question
The displacement y of a particle in a medium can be expressed as, y=10^ -6 (100 t+20 x+ 4 ) m where t is in second and x in meter. The speed of the wave is
BITSAT
Physics
Waves and Sound
2021
BITSAT 2021
BITSAT Physics Question (2021) — Solution
Options
- A. 20 ~m / s
- B. 5 ~m / s
- C. 2000 ~m / s
- D. 5 m / s
Answer
B. 5 ~m / s
Step-by-step solution
From equation given, array l =100 \\ and k =20 \\ v = k = 100 20 =5 ~m / s array
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