Chapter 10 – Oscillation and Waves

A stationary source of sound is emitting sound of frequency 500Hz. Two observers A and B lying on the same line as the source, observe frequencies 480Hz and 530Hz respectively. The velocity of A and B respectively are (in m/s), speed of sound =300 m/s. A stationary source of sound is emitting sound of frequency [...]

A string 2.0m long and fixed at its ends is driven by a 240 Hz vibrator. The string vibrates in its third harmonic mode. The speed of the wave and its fundamental frequency is? A string 2.0m long and fixed at its ends is driven by a 240 Hz vibrator. The string vibrates in its [...]

Two cars A and B are moving away from each other in opposite directions. Both the cars are moving with a speed of 20ms^−1 with respect to the ground. If an observer in car A detects a frequency 2000 Hz of the sound coming from car B, what is the natural frequency of the sound [...]

The pressure wave, P = 0.01 sin [1000t – 3x] Nm^−2 , corresponds to the sound produced by a vibrating blade on a day when atmospheric temperature is 0°C. On some other day, when temperature is T, the speed of sound produced by the same blade and at the same frequency is found to be [...]

A string is clamped at both the ends and it is vibrating in its 4th harmonic. The equation of the stationary wave is Y = 0.3 sin(0.157x) cos(200πt). The length of the string is : (All quantities are in SI units.) and is cut into n equal parts If a spring has time period T [...]

In forced oscillation of a particle the amplitude is maximum for a frequency ω1 of force, while the energy is maximum for a frequency ω2 ​of the force, then: In forced oscillation of a particle the amplitude is maximum for a frequency ω1 of force then while the energy is maximum for a frequency ω2 [...]

A particle of mass (m) is attached to a spring (of spring constant k) and has a natural angular frequency omega_(0). An external force R(t) proportional to cos omega t(omega!=omega)(0) is applied to the oscillator. The time displacement of the oscillator will be proportional to. If a simple harmonic motion is represented by d^2x/dt^2 + [...]

The bob of simple pendulum executes SHM in water with a period T, while the period of oscillation of the bob is T0 in air. Neglecting frictional force of water and given that the density of the bob is 4/3 x 1000 kgm^−3 , what relationship between T and T0 is true ? The bob [...]

The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hole near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillation would The bob of a simple pendulum is a spherical hollow ball filled with water. A [...]

If a simple harmonic motion is represented by d^2x/dt^2 + αx = 0, its time period is If a simple harmonic motion is represented by d^2x/dt^2 + αx = 0 its time period is November 6, 2020 Category: Chapter 10 - Oscillation and Waves , JEE Mains Physics 2002-2019 Solved Video Solutions ,