JEE Physics Practice Question
A stationary source emits sound of frequency $f_{0}=492 \mathrm{~Hz}$. The sound is reflected by a large car approaching the source with a speed of $2 \mathrm{~ms}^{-1}$. The reflected signal is received by the source and superposed with the original. What will be the beat frequency of the resulting signal in Hz? (Given that the speed of sound in air is $330 \mathrm{~ms}^{-1}$ and the car reflects the sound at the frequency it has received).
Want to know if you got it right?
Answer this and thousands more real JEE previous-year questions free, get graded instantly, and climb the global ranked leaderboard.
Practice JEE free →More JEE Physics questions
- A metal is heated in a furnace where a sensor is kept above the metal surface to read the …
- The isotope { }_{5}^{12} \mathrm{~B} having a mass 12.014 u undergoes \beta-decay to { }_{…
- A hydrogen atom in its ground state is irradiated by light of wavelength 970 A. Taking h c…
- Consider two solid spheres \mathrm{P} and \mathrm{Q} each of density 8 \mathrm{gm} \mathrm…
- Two inductors L_{1} (inductance 1 \mathrm{mH}, internal resistance 3 \Omega ) and L_{2} (i…
- A drop of liquid of radius \mathrm{R}=10^{-2} \mathrm{~m} having surface tension \mathrm{S…
- An electron in a hydrogen atom undergoes a transition from an orbit with quantum number n_…
- { }^{131} \mathrm{I} is an isotope of Iodine that \beta decays to an isotope of Xenon with…