TS EAMCET · Physics · Waves and Sound
An observer moves towards a stationary source of sound with a speed \(\frac{1}{5} t h\) that of sound. The frequency of the sound emitted by the source is \(f\). The apparent frequency recorded by the observer is
- A \(1.2 f\)
- B \(f\)
- C \(0.8 f\)
- D \(2 f\)
Answer & Solution
Correct Answer
(A) \(1.2 f\)
Step-by-step Solution
Detailed explanation
\[ \mathrm{v}_0=\frac{\mathrm{v}}{5} \] Apparent frequency:…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A block of mass is kept against an accelerating wedge with a wedge angle of to the horizontal. The co-efficient of friction between the block and the wedge is . What is the minimum absolute value of the acceleration of the wedge to keep the block steady. Assume
TS EAMCET 2018 Medium - A particle is moving in xy-plane as \(\vec{x}=\left(4 t+t^2\right) \hat{i}, \vec{y}=\left(2 t+\frac{t^2}{2}\right) \hat{j}\) where \(\vec{x} \& \vec{y}\) are displacements measured along \(\mathrm{x}\) and y axes respectively in meters and \(t\) in seconds. What is the velocity of the particle?TS EAMCET 2022 Easy
- A water drop breaks into 64 identical droplets of each surface area \(10^{-7} \mathrm{~m}^2\). If the surface tension of water is \(0.07 \mathrm{Nm}^{-1}\), the increase in the surface energy in the process isTS EAMCET 2023 Easy
- A circular coil carrying a current of 2.5 A is free to rotate about an axis in its plane perpendicular to an external magnetic field. When the coil is made to oscillate, the time period of oscillation is T. If the current through the coil is 10 A , the time period of oscillation isTS EAMCET 2024 Easy
- Fraunhoffer lines are produced by the absorption of light inTS EAMCET 2005 Easy
- A convex lens with lateral magnification 2 is used to image a point at the bottom of a tank. The image of the point is formed \(60 \mathrm{~cm}\) above the lens. Now a liquid is filled into the tank to a height of \(24 \mathrm{~cm}\). It is found that the distance of the image of the same point is now \(120 \mathrm{~cm}\) above the lens. Find the refractive index of the liquid.TS EAMCET 2021 Hard
More PYQs from TS EAMCET
- A force \(F\) is applied on a square plate of length \(L\). If the percentage error in the determination of \(L\) is \(3 \%\) and in \(F\) is \(4 \%\), then permissible error in the calculation of pressure isTS EAMCET 2017 Easy
- A parallel plate capacitor with air as dielectric has a capacitance of \(4 \mu \mathrm{~F}\). The space between the plates of the capacitor is completely filled with a material of dielectric constant 5 and charged to a potential of 100 V. The work done to completely remove the dielectric material after the capacitor is disconnected from the battery isTS EAMCET 2025 Medium
- The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is . The magnet is cut into three equal parts of length each. If these parts are placed on each other with their like poles together, then the time period of this combination isTS EAMCET 2020 Easy
- The force ( F in newton) acting on a particle of mass 90 g executing simple harmonic motion is given by \(\mathrm{F}+0.04 \pi^2 y=0\), where \(y\) is displacement of the particle in meter. If the amplitude of the particle is \(\frac{6}{\pi} \mathrm{~m}\), then the maximum velocity of the particle isTS EAMCET 2025 Medium
- A sonometer wire has a length of \(114 \mathrm{~cm}\), between two fixed ends. Where should two bridges be placed so as to divide the wire into three segments (in \(\mathrm{cm}\) ) whose fundamental frequencies are in the ratio \(1: 3: 4\) ?TS EAMCET 2010 Medium
- Which of the following pairs has same dimensions?TS EAMCET 2023 Easy