JEE Main Waves & Oscillations — practice questions
30 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice JEE Main Waves & Oscillations in the app →In an ideal pendulum oscillating without air resistance, which quantity remains constant?Unpolarised light of intensity $I_0$ is passed through a single ideal polariser. The intensity of the transmitPlane-polarised light is incident on an analyser. If the angle between the polarisation direction of the lightBrewster's angle for a glass of refractive index $ qrt{3}$ (relative to air) is:In a Young's double slit setup, the intensities arriving at a point from the two slits are $I$ and $4I$. The rThe central bright fringe in a YDSE pattern with white light is white, but the immediately adjacent fringes arUsing dimensional analysis, find the correct relation for time period $T$ of a simple pendulum:A pendulum bob oscillates as $x(t) = 0.05\cos(2\pi t)$ in metres. Its amplitude and period are:A spring of constant $k = 100$ N/m carries a mass of $1$ kg. Its period of oscillation is:A simple pendulum's length is increased four times. Its period changes by a factor of:A child's swing is pushed gently at its natural frequency and the amplitude grows large. This phenomenon is caA wave on a lake has wavelength $4$ m and frequency $0.5$ Hz. Its speed is:A string of mass per unit length $\mu = 0.01$ kg/m is under tension $T = 100$ N. Wave speed on it is:Two tabla drums sound at $256$ Hz and $260$ Hz simultaneously. The beat frequency heard is:An autorickshaw with horn at frequency $f_0$ moves toward a stationary listener. The listener hears a frequencA wave traveling in the +x direction with amplitude A, angular frequency ω and wavenumber k has displacement gThe speed of a transverse wave on a string of linear mass density μ under tension T isThe speed of sound in a gas is v = √(γP/ρ). This is theTwo waves y₁ = A sin(kx − ωt) and y₂ = A sin(kx − ωt + φ) superpose. The resulting amplitude isThe frequency of beats when two waves of frequencies 512 Hz and 508 Hz superpose isA wave has speed 340 m/s and frequency 850 Hz. Its wavelength isLongitudinal waves are best exemplified byWhen a wave is reflected from a rigid boundary (fixed end of a string), the reflected wave undergoesThe speed of light in vacuum isTwo waves overlap to produce a standing wave on a string. The nodes are points whereThe fundamental frequency of a vibrating string of length L, tension T, linear density μ isThe wave equation y = 0.05 sin(20πx − 100πt) SI units. The wave speed isFor a longitudinal wave in air, the excess pressure and displacement are related such thatNewton's formula for the speed of sound in air (assuming isothermal process) predicted a value about 15% lowerIf a source emits sound of frequency 500 Hz and moves at 20 m/s toward a stationary observer (speed of sound 3