CBSE Class 11 Waves & Oscillations — practice questions
89 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 Waves & Oscillations in the app →Newton's first law of motion is also known as the law ofA cricket ball of mass 150 g moving at (3i+4j) m/s is hit to -(3i+4j) m/s. The magnitude of momentum change isConservation of linear momentum in a collision follows directly fromA force F acts on a 2 kg body for 3 s, changing its speed from 2 m/s to 8 m/s along the line of F. The magnituThe maximum static friction force on a body is f = μN. Static friction is best described asA 10 kg block on a frictionless surface is pulled by 20 N horizontally and 20 N at 60° above horizontal. The hImpulse equalsA body in equilibrium under several forces hasA 0.5 kg ball hits a wall at 10 m/s and rebounds at 10 m/s. The impulse on the ball isNewton's second law in vector form isA lift accelerates upward at 2 m/s². The apparent weight of a 50 kg person (g=10) isTwo blocks of 2 kg and 3 kg connected by a string are pulled by 10 N on the 3 kg block (frictionless). The accThe SI unit of force, the newton, equalsPer NCERT §4.5, the dimensions of FORCE are which set?Per NCERT §4.5, for a body of constant mass, the second law reduces to which form?Per NCERT §4.7, the total momentum of an ISOLATED system (no external force) 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 frequencMotion 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:A motion that repeats itself at regular intervals of time is called:An oscillating object moves to and fro about a position that is its:A familiar object executing periodic motion is the pendulum of a:The smallest time after which a periodic motion repeats is its:The period of a motion is denoted by the symbol:The SI unit of period is the:The period of a quartz crystal's vibration is expressed in:Describing periodic motion needs period, frequency, displacement, phase and:The amplitude of SHM is the magnitude of the maximum:The amplitude of SHM can be taken as a quantity that is:The starting value of the phase in SHM is known as the phase:The phase constant can be found from the displacement at time:The periods of a swinging lamp were said to have been measured by:A simple pendulum is a small bob tied to a string that is:The string of a simple pendulum is also assumed to be:The free end of the pendulum string is fixed to a support that is:Because the string is massless, the pendulum's moment of inertia comes from the:Besides free oscillations, the topic also treats oscillations that are damped and:Any material medium can be pictured as a collection of:The letter used for the mass of the pendulum bob is:The letter used for the length of the pendulum string is:Frequency is one of the concepts used to describe motion that is: