COMEDK2023PhysicsWaves and Sound
With what velocity should an observer approach a stationary sound source, so that the apparent frequency of sound should appear double the actual frequency?
Options
- Av / 2
- B3 v
- C2 v
- Dv
Correct answer
D. v
Step-by-step solution
By using v^ =v [ v-v₀ v-v_s ] array ll & 2 v=v [ v-v₀ v-0 ] & v₀=-v array Negative sign indicates that observer is moving opposite to the direction of velocity of sound.