TS EAMCET · Physics · Waves and Sound
If three sources of sound of frequencies \((n-1), n\) and \((n+1)\) are vibrated together, the number of beats produced and heard per second respectively are
- A 4 and 2
- B 4 and 4
- C 2 and 2
- D 2 and 4
Answer & Solution
Correct Answer
(C) 2 and 2
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & f_1=n-1 \\ & f_2=n \\ & f_3=n+1 \end{aligned}\) \(\begin{aligned} \operatorname{maximum} N_0 \text { of beats } & =f_3-f_1 \\ & =n+1-(n-1) \\ \therefore N & =2 \end{aligned}\) \(N=2 \text { beats } / \mathrm{sec}\) \(\therefore\) No. of beats produced will be…
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
- Two trucks heading in opposite directions each with speed \(0.1 u\), approach each other. The speed of the sound is \(u\). The driver of first truck sounds his horn of frequency \(495 \mathrm{~Hz}\). Let \(v_1\) and \(v_2\) are the frequencies heard by the driver of second truck, when the trucks approach each other and when the trucks have passed each other. The magnitude of \(v_1-v_2\) isTS EAMCET 2020 Medium
- A hydraulic lift as shown in the figure is used to lift a mass of \(1000 \mathrm{~kg}\), which is placed on a piston \(\left(P_1\right)\) of area \(1 \mathrm{~m}^2\). If the cross-section area of the piston \(\left(P_2\right)\) at the other end is \(0.01 \mathrm{~m}^2\), then how much mass needs to be put on it to lift the \(1000 \mathrm{~kg}\) ?
TS EAMCET 2020 Easy - Assertion: The zero velocity of a particle at any instant always implies zero acceleration at that instant Reason: A body is momentarily at rest when reverses its direction of motion. The correct option among the following isTS EAMCET 2022 Medium
- Two uniform strings \(A\) and \(B\) made of steel are made to vibrate under the same tension. If the first overtone of \(A\) is equal to the second overtone of \(B\) and if the radius of \(A\) is twice that of \(B\), the ratio of the lengths of the strings is :TS EAMCET 2003 Medium
- In a nuclear reactor, the main purpose of the moderator is toTS EAMCET 2021 Medium
- The ratios of the voltage sensitivities, resistances and areas of the coils of two moving coil galvanometers \(A\) and \(B\) are \(4: 3,3: 4\) and \(1: 2\) respectively. If the number of turns of the coil of galvanometer A is 200, then the number of turns of the coil of galvanometer B is
(All other quantities remain same in both the cases)TS EAMCET 2025 Medium
More PYQs from TS EAMCET
- In Young's double slit experiment, the \(10^{\text {th }}\) maximum of wavelength \(\lambda_1\) is at a distance of \(y_1\) from the central maximum. When the wavelength of the source is changed to \(\lambda_2, 5^{\text {th }}\) maximum is at a distance of \(y_2\) from its central maximum. The ratio \(\left(\frac{y_1}{y_2}\right)\) isTS EAMCET 2009 Easy
- A swimmer wants to cross a \(200 \mathrm{~m}\) wide river which is flowing at a speed of \(2 \mathrm{~m} / \mathrm{s}\). The velocity of the swimmer with respect to the river is \(1 \mathrm{~m} / \mathrm{s}\). How far from the point directly opposite to the starting point does the swimmer reach the opposite bank?TS EAMCET 2017 Easy
- A circular copper ring at \(30^{\circ} \mathrm{C}\) has a hole with an area of \(9.98 \mathrm{~cm}^2\). It is made to slip onto a steel rod of crosssectional area of \(10 \mathrm{~cm}^2\), by raising the temperature of both ring and rod simultaneously by an amount \(\Delta \mathrm{T}\). If the coefficient of linear expansion of copper and steel are \(17 \times 10^{-6} /{ }^{\circ} \mathrm{C}\) and \(11 \times 10^{-6} /{ }^{\circ} \mathrm{C}\), then minimum value of \(\Delta \mathrm{T}\) should beTS EAMCET 2022 Hard
- A capillary tube of radius ' \(r\) ' is immersed in water and water rises to a height of ' \(h\) '. Mass of water in the capillary tube is \(5 \times 10^{-3} \mathrm{~kg}\). The same capillary tube is now immersed in a liquid whose surface tension is \(\sqrt{2}\) times the surface tension of water. The angle of contact between the capillary tube and this liquid is \(45^{\circ}\). The mass of liquid which rises into the capillary tube now is, (in \(\mathrm{kg}\) )TS EAMCET 2013 Medium
- A body is sliding down a rough inclined plane. The coefficient of friction between the body and the plane is 0.5 . The ratio of the net force required for the body to slide down and the normal reaction on the body is \(1: 2\). Then the angle of the inclined plane isTS EAMCET 2002 Medium
- In a horizontal tube the water pressure changes by \(1500 \mathrm{Nm}^{-2}\) between \(A\) and \(B\) as shown in figure below. The cross-sectional areas at \(A\) and \(B\) of the tube are \(40 \mathrm{~cm}^2\) and \(20 \mathrm{~cm}^2\), respectively. Find the rate of flow of water through the tube.
TS EAMCET 2021 Hard