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BITSAT 2014
Exam
BITSAT
Year
2014
Subject
Physics
Chapter
Waves and Sound

BITSAT 2014 · Physics · Waves and Sound

A sound source, emitting sound of constant frequency, moves with a...

A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer. The frequency (n) of sound heard by the observer is plotted against time (t). Which of the following graphs represents the correct variation?A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer.A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer.A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer.A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer.A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer.A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer.

Options

  1. ADirections: Study the following questions carefully and answer the questions given below. Siddharth starts running from
  2. BDirections: Study the following questions carefully and answer the questions given below. Siddharth starts running from
  3. CDirections: Study the following questions carefully and answer the questions given below. Siddharth starts running from
  4. DDirections: Study the following questions carefully and answer the questions given below. Siddharth starts running from

Correct answer

D. Directions: Study the following questions carefully and answer the questions given below. Siddharth starts running from

Step-by-step solution

(\xrightarrow[ source ]Vs Observer velocity =xrightarrow[\text{ source }]{V_s} \text{ Observer velocity }=0)
\(\text{when Approaching }={ }}^n\left[\frac{v}{V-V_s}\right])<br />when Its going away (={ }^n\left[\frac{V}{V+V_s}\right])<br /><img src="https://firebasestorage.googleapis.com/v0/b/quantrexacademy-app.firebasestorage.app/o/questions%2Ffigs%2Fdiagrams%2Fqx-self-d102141f936ee167.png?alt=media \text{ and } v=stem2" data-qx-orig-src="/assets/diagrams/qx-self-d102141f936ee167.png" data-qx-storage-src="/assets/diagrams/qx-self-d102141f936ee167.png">
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