AP EAPCET (Engineering) Waves — practice questions
86 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP EAPCET (Engineering) Waves in the app →Two identical periodic waves travelling in opposite directions superpose to form which kind of wave?Which kind of wave can travel only through a material transmission medium?Electromagnetic waves, unlike sound, can propagate through which of these?Which wave type cannot be polarized, as it oscillates along its travel line?A transverse wave is linearly polarized when it oscillates how?A wave reflects from a surface. How do the reflected and incident angles compare?What changes when a wave passes from one medium into another and refracts?The directions of incidence and refraction are linked to the refractive indices of two media by which law?Diffraction is strongest when an opening is of what size?At a point where two waves of the same type meet, the resulting disturbance is what?After two waves cross in a linear medium, what happens to each wave?What is the most common cause of standing waves in a resonator?For equal waves travelling in opposite directions, what is the average net energy propagation?Nodal line patterns on vibrating two-dimensional membranes like drumheads are named after whom?On a violin string held at the bridge and nut, what forms at those fixed points?An air column closed at one end supports which harmonics?What standing wave ratio does a pure standing wave have?A pure standing wave does what with energy between source and destination?Who described the shift in observed wave frequency due to relative motion in 1842?When a sound source moves toward a stationary observer, the observed frequency does what?Who tested the Doppler hypothesis for sound waves in 1845?A sound source moving faster than the speed of sound produces which effect?For light waves in vacuum, which speed matters in the Doppler shift?Beats are heard when two sounds have what property?The rate of beats heard equals which quantity?As two slightly detuned tones are brought toward unison, what happens to the beating?Piano and organ tuners use which method to tune intervals?Two tuning forks of 512 Hz and 508 Hz sound together. How many beats per second are heard?Two tones of 440 Hz and 446 Hz are played together. What is the beat frequency?What is a soliton?Passing white light through a prism to form a spectrum demonstrates which phenomenon?How does a mechanical wave pass through a medium?A sound wave in air is a variation of which two quantities?Gravitational waves are best described as disturbances in what?Temperature waves and chemical reaction waves show that waves need not involve what?What is special about the value of a plane wave on any plane perpendicular to its travel direction?Glider pilots exploit standing waves that form in the atmosphere where?A partial standing wave is a superposition of a standing wave and what?The Faraday wave is a non-linear standing wave found at which interface?Lasers build their standing light waves between what arrangement?A lossy material removes wave energy, usually converting it into what?In a linear medium, the amplitudes of different waves at one point can be what?An isotropic medium has physical properties that are what?Waves normally move through a transmission medium along what path?Mechanical and electromagnetic waves transfer which quantities?A familiar example of the Doppler shift is the change in pitch of what?A sound source recedes from a listener. How is the heard frequency?The simplest wave is a sinusoidal plane wave. Each point then undergoes what motion?A medium in which wave speed depends on frequency is called what?The extent to which a material refracts a wave is given by which property?Standing surface waves on the Earth are observed as what?Rotation of an electric dipole produces which type of wave?Which cause can give a standing wave in a stationary medium?A wave is dispersive when its phase velocity or group velocity depends on what?Two people shaking the ends of a jump rope in sync produce a pattern that illustrates what?A wave has frequency 50 Hz and wavelength 4 m. What is its speed?Sound of frequency 170 Hz travels in air at 340 m/s. What is its wavelength?A string of length 0.6 m is fixed at both ends. What is the wavelength of its fundamental standing wave?In a pipe closed at one end, the first overtone is how many times the fundamental frequency?In a standing wave of wavelength 0.8 m, how far apart are adjacent nodes?A 400 Hz siren approaches a still observer at one fifth of the speed of sound. What frequency is heard?A wave has a period of 0.02 s. What is its frequency?Which physicist described the shift in wave frequency for moving sources in 1842?What fixes the speed of a sound wave in air, regardless of how fast the source moves?How does a passing ambulance siren sound to a roadside listener?In astronomy, light from a star approaching us is shifted towards which end?Which everyday device uses the Doppler effect to catch speeding motorists?Which animal uses Doppler-shifted echoes to locate moths in flight?What does an echocardiogram measure using Doppler shift?A source moves at or above the wave speed. What happens to the Doppler equation?A 450 Hz source moves at 34 m/s towards a still listener. Sound speed is 340 m/s. What frequency is heard?In the Doppler formula for sound, speeds are measured relative to what?Doppler ultrasound helps diagnose which vascular problem by measuring blood flow?In acoustics, the beat frequency of two close tones equals what?Tones of 300 Hz and 304 Hz sound together. How many beats occur in 5 s?Which principle explains how two simultaneous tones combine into beats?What alternates in the air when beats are heard from two close tones?Beats are perceived as a periodic variation in which property of sound?Who first described standing waves scientifically in 1831?Who coined the term standing wave around 1860 using vibrating strings?A standing wave from two equal opposing waves has what net energy flow?What are the nodal line patterns on a vibrating plate or drumhead called?Standing wave ratio (SWR) is the ratio of amplitudes at which two positions?A seiche is a standing wave in which kind of system?A laser cavity of two facing mirrors holds which kind of wave pattern?Which standing waves are exploited by glider pilots in the lee of mountains?