AP EAMCET · PHYSICS · Waves and Sound
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 \(1: 3: 4\) ?
- A \(l_1, l_2, l_3=18,24,72\)
- B \(l_1, l_2, l_3=24,18,72\)
- C \(l_1, l_2, l_3=72,18,24\)
- D \(l_1, l_2, l_3=72,24,18\)
Answer & Solution
Correct Answer
(D) \(l_1, l_2, l_3=72,24,18\)
Step-by-step Solution
Detailed explanation
If length of the wire between the two bridges is \(l\), the frequency of vibration \(n=\frac{1}{2 l} \sqrt{\frac{T}{m}}\) \(\therefore \quad n \propto \frac{1}{l}\) Therefore, \(n_1: n_2: n_3=\frac{1}{l_1}: \frac{1}{l_2}: \frac{1}{l_3}\)…
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
- The wavelength of the first spectral line of the Lyman series of hydrogen spectrum isAP EAMCET 2021 Easy
- A car moving with a certain velocity, jumps from an inclined plane placed at one bank of a river and reaches the other bank by attained a maximum height of \(80 \mathrm{~m}\). If the same car, moving with the same velocity jumps from another inclined plane having different angle of inclination and reaches the same point on the other bank by attaining maximum height of \(45 \mathrm{~m}\), then the width of the river isAP EAMCET 2019 Hard
- A spring of spring constant \(200 \mathrm{Nm}^{-1}\) is initially stretched by 10 cm from the unstretched position. The work to be done to stretch the spring further by another 10 cm isAP EAMCET 2024 Easy
- A vector perpendicular to the vector \((4 \hat{\mathrm{i}}-3 \hat{\mathrm{j}})\) isAP EAMCET 2025 Easy
- Satellites which give high value data for remote sensing, meteorology and environmental studies areAP EAMCET 2023 Easy
- The magnetic field lines of a bar magnetAP EAMCET 2023 Easy
More PYQs from AP EAMCET
- \(\begin{aligned} & \text { If } \frac{3 x^2+1}{\left(x^2+1\right)\left(x^2+2\right)^2}=\frac{A x+B}{x^2+1}+\frac{C x+D}{x^2+2} \\ & +\frac{E x+F}{\left(x^2+2\right)^2}, \text { then } A+C+E=\end{aligned}\)AP EAMCET 2018 Medium
- Let \(S_n=1+3 x+9 x^2+27 x^3+\ldots n\) terms and \(-\frac{1}{3} < x < \frac{1}{3}\) If \(\lim _{\mathrm{n} \rightarrow \infty} \mathrm{S}_{\mathrm{n}}=\mathrm{f}(\mathrm{x})\), then \(\mathrm{f}(\mathrm{x})\) is discontinuous at the point \(\mathrm{x}=\)AP EAMCET 2023 Medium
- The equivalent capacitance between \(A\) and \(B\) in the given circuit is
AP EAMCET 2021 Medium - A circular disc of mass 20 kg and radius 1 m is rotating about an axis passing through its center and perpendicular to its plane with an angular velocity of \(2 \mathrm{rad} \mathrm{s}^{-1}\). Then the rotational kinetic energy of the disc isAP EAMCET 2025 Easy
- Integral \(\int\left(\frac{2 x^3-3 x+5}{2 x^2}\right) d x\) is valid forAP EAMCET 2020 Easy
- A radioactive element \(A\) converts into another stable element \(B\), half-life of \(A\) is \(1.5 \mathrm{hrs}\). After time \(t\) the ratio of atoms of \(A\) and \(B\) is found to be \(1: 8\), then \(t\) in hours isAP EAMCET 2022 Easy