MHT CET20239 May 2023Morning ShiftPhysicsWaves and SoundActual
When both source and listener are approaching each other the observed frequency of sound is given by (V_L . and V_S is the velocity of listener and source respectively, n ₀= radiated frequency)
Options
- An = n ₀ [ V + V _ L V - V _ s ]
- Bn = n ₀ [ V - V _ L V + V _ s ]
- Cn = n ₀ [ V - V _ L V - V _ s ]
- Dn = n ₀ [ V + V _ L V + V _ s ]
Correct answer
A. n = n ₀ [ V + V _ L V - V _ s ]
Step-by-step solution
Using Dopper's effect formula for approaching frequency when both source and listener are approaching each other, the observed frequency of sound is given by, n = n ₀ [ V + V _ L V - V _ s ]