Chapter 10: Problem 1468
When temperature increases, the frequency of a tuning fork (A) Increases (B) Decreases (C) remains same (D) Increases or decreases depending on the material.
Chapter 10: Problem 1468
When temperature increases, the frequency of a tuning fork (A) Increases (B) Decreases (C) remains same (D) Increases or decreases depending on the material.
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Get started for freeTwo wires made up of same material are of equal lengths but their radii are in the ratio \(1: 2\). On stretching each of these two strings by the same tension, the ratio between their fundamental frequency is \(\ldots \ldots \ldots .\) (A) \(1: 2\) (B) \(2: 1\) (C) \(1: 4\) (D) \(4: 1\)
The distance travelled by a particle performing S.H.M. during time interval equal to its periodic time is \(\ldots \ldots\) (A) A (B) \(2 \mathrm{~A}\) (C) \(4 \mathrm{~A}\) (D) Zero.
A spring is attached to the center of a frictionless horizontal turn table and at the other end a body of mass \(2 \mathrm{~kg}\) is attached. The length of the spring is \(35 \mathrm{~cm}\). Now when the turn table is rotated with an angular speed of \(10 \mathrm{rad} \mathrm{s}^{-1}\), the length of the spring becomes \(40 \mathrm{~cm}\) then the force constant of the spring is $\ldots \ldots \mathrm{N} / \mathrm{m}$. (A) \(1.2 \times 10^{3}\) (B) \(1.6 \times 10^{3}\) (C) \(2.2 \times 10^{3}\) (D) \(2.6 \times 10^{3}\)
When the displacement of a S.H.O. is equal to \(\mathrm{A} / 2\), what fraction of total energy will be equal to kinetic energy ? \\{A is amplitude \(\\}\) (A) \(2 / 7\) (B) \(3 / 4\) (C) \(2 / 9\) (D) \(5 / 7\)
Two simple pendulums having lengths \(144 \mathrm{~cm}\) and \(121 \mathrm{~cm}\) starts executing oscillations. At some time, both bobs of the pendulum are at the equilibrium positions and in same phase. After how many oscillations of the shorter pendulum will both the bob's pass through the equilibrium position and will have same phase ? (A) 11 (B) 12 (C) 21 (D) 20
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