Verified Solution • 2025–26 Session moderate

QAIPM-2000-Ph-3030: NEET 2000 Physics - Class 11 AIPM-2000-Ph-3030 Solution: Two stationary sources each emitting waves of wavelength \( \), …

Two stationary sources each emitting waves of wavelength λ\lambda, an observer moves from one source to another with velocity u. Then number of beats heard by him

Multiple Choice Options

  • A 2uλ\frac{2u}{\lambda}
  • B uλ\frac{u}{\lambda}
  • C uλ\sqrt{u\lambda}
  • D u2λ\frac{u}{2\lambda}

Step-by-Step Verified Solution

f _ = v _ u v f ; f _ = v + u v f Number of beats = f _ _ f _ = 2 u _

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