NEET UG Waves & Oscillations — practice questions
112 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Waves & Oscillations in the app →In Young's double slit experiment how many maxima can be obtained on a screen (including the central maximum) In the ideal double-slit experiment, when a glass-plate (refractive index 1.5) of thickness $t$ is introduced A man weighing $60\,\mathrm{kg}$ stands on the horizontal platform of a spring balance. The platform starts exTwo masses $m_1$ and $m_2$ are suspended together by a massless spring of constant $K$. When the masses are inA passenger standing in a bus is thrown backward when the bus suddenly starts moving forward. This is best expOne newton is defined as the force that gives a mass of 1 kg an acceleration of:The linear momentum of a body is defined as the product of its:The impulse of a force has the same dimensions as:The action and reaction forces of Newton's third law:For a given pair of surfaces, the coefficient of kinetic friction is usually:A constant force of 20 N acts on a 5 kg body initially at rest. Its speed after 3 s is:A 0.15 kg ball moving at 12 m s⁻¹ is hit straight back along its path with the same speed. The magnitude of thA 0.04 kg bullet moving at 90 m s⁻¹ is stopped after penetrating 0.6 m into a block. The average resistive forA box rests on the floor of a truck with coefficient of static friction 0.15. The maximum acceleration of the A block just begins to slide down an incline when the angle of inclination is 30°. The coefficient of static fA 0.02 kg bullet is fired with a speed of 300 m s⁻¹ from a 4 kg gun. The recoil speed of the gun is:A 50 kg person stands on a weighing scale inside a lift accelerating upward at 2 m s⁻² (g = 10 m s⁻²). The scaA 0.5 kg stone tied to a string is whirled in a horizontal circle of radius 2 m at a speed of 4 m s⁻¹. The tenThe maximum speed at which a car can round an unbanked circular turn of radius 150 m without skidding is (μs =A 3 kg block hangs from a light string passing over a frictionless pulley and pulls a 20 kg trolley along a hoFor a 3 kg block connected over a frictionless pulley to a 20 kg trolley (μk = 0.04, g = 10 m s⁻²), the tensioA 6 kg mass hangs from a light rope. A horizontal force of 50 N is applied at the rope's midpoint (g = 10 m s⁻One ball strikes a wall normally and rebounds with unchanged speed; an identical ball strikes at 30° to the noA net force F = 6t newton (t in seconds) acts on a 2 kg body initially at rest. The speed of the body at t = 4A block slides down a rough incline of 30° with coefficient of kinetic friction 0.2 (g = 10 m s⁻²). Its acceleA lift descends with a downward acceleration equal to g. The apparent weight of a passenger standing inside isA 10 N horizontal force is applied to a 2 kg block that pushes a 3 kg block in contact with it on a frictionleA 0.2 kg ball strikes the floor vertically at 10 m s⁻¹ and rebounds at 8 m s⁻¹. The magnitude of the impulse iThe optimum (design) speed for a car on a frictionless road banked at 45° along a curve of radius 100 m is (g A standing wave is formed on a string by superposition of two identical waves moving in opposite directions. WA wave is represented by $y=A in(\omega t-kx)$. If the frequency is doubled while the wave speed remains unchaFor longitudinal mechanical waves in a fluid, the wave speed is given by
$ and $y_2=A in(\omega t+kx)$ are superposed, the resultant displacement isWhich pair of equations can combine to produce a standing wave?Two waves of the same amplitude and frequency travel in opposite directions along the same line and superpose.A wave is represented by $y=A in(\omega t+kx)$. What does this imply?A wave is described by $y=A in(\omega t-kx)$. This wave propagates in which direction?According to the classification shown in the figure, which pair consists entirely of mechanical waves?
 is which?Per NCERT §4.6 (action and reaction labelling), which statement about the labels is true?Per NCERT §4.9.1, KINETIC (sliding) friction is approximately given by which relation?Per NCERT §4.9.1, the coefficients of static and kinetic friction satisfy which order?Per NCERT Example 4.7, the MAXIMUM acceleration of a train such that a box on its floor (μ_s = 0.15) remains sPer NCERT Example 4.10, a cyclist taking a R=3 m turn at 18 km/h (μ_s = 0.1) is in which condition?A gun of mass $4$ kg fires a bullet of mass $0.04$ kg at $300$ m/s. Recoil speed of the gun is: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 3Motion that repeats to and fro about a mean position is called:Which instrument is given as having vibrating strings?The simplest form of oscillatory motion is called:In simple harmonic motion the force is proportional to the:The mean position in an oscillation is also the:The smallest interval after which motion repeats is the:The SI unit of the period of oscillation is the:The number of repetitions per unit time is called the:The unit of frequency is named the:One hertz equals how many oscillations per second?Must the frequency of an oscillation be a whole number?For an oscillating pendulum, what serves as the displacement?In simple harmonic motion, the speed is maximum where displacement is:In simple harmonic motion, the speed at the extremes is:In the standard equation, the symbol A stands for the:The time-dependent quantity in the cosine argument is the:The value of the phase at time zero is called the phase:The force in simple harmonic motion always points towards the:Because it pulls the body back, the force in SHM is called:Waves that need a medium to travel through are called:Can mechanical waves travel through a vacuum?Mechanical waves depend on which properties of the medium?Electromagnetic waves are described as being:A wave whose particles oscillate perpendicular to its travel is:A wave whose particles oscillate along its direction of travel is:A wave on a string is given as an example of which wave?The wavelength is the distance between two consecutive:The quantity k is called the angular wave number or:The SI unit of the angular wave number is:When two pulses overlap, the resultant displacement is the:The rule that overlapping waves add is called the principle of:Under superposition, each pulse moves as if the others are:A wave meeting its own reflection can form a wave that is:In a standing wave, points of zero amplitude are called:In a standing wave, points of largest amplitude are called:A stationary wave pattern results from superposing how many waves?The positions of the nodes in a standing wave are: