Free Progressive Waves MCQs with Answers
72 Progressive Waves MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
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72 questions · page 2 of 4
- A. Matter waves
- B. Transverse waves
- C. Longitudinal waves
- D. Electromagnetic waves
Explanation: Sound waves are a classic example of longitudinal waves. In longitudinal waves, the displacement of the medium is parallel to the…
Correct answer: Longitudinal waves- A. 0.1 s.
- B. 1 s.
- C. 10 s.
- D. 100 s.
Explanation: The time period of a wave is the reciprocal of its frequency. Thus, the time period T = 1/frequency.
Correct answer: 0.1 s.- A. Equal in all cases.
- B. Greatest in case I.
- C. Greatest in case II.
- D. Greatest in case III.
Explanation: Frequency is defined as the number of wave cycles that pass a given point per unit time.
Correct answer: Greatest in case III.- A. Refraction.
- B. Diffraction.
- C. Interference.
- D. Polarisation.
Explanation: The correct answer is polarisation. Polarisation is a property of transverse waves, where the oscillations occur in a particular direction…
Correct answer: Polarisation.- A. light
- B. water waves
- C. expanding galaxies
- D. electromagnetic waves
Explanation: C) Expanding galaxies: The Doppler effect is a fundamental tool in astronomy.
Correct answer: expanding galaxies- A. Transverse wave
- B. Longitudinal wave
- C. Standing wave
- D. shock wave
Explanation: Longitudinal waves are those waves in which particles of the disturbed medium move parallel to the direction of propagation of the wave.
Correct answer: Transverse wave- A. Longitudinal wave
- B. Stationary wave
- C. Superimposed wave
- D. Transverse wave
Explanation: Only transverse waves can be polarised. Longitudinal waves cannot be polarised.Transverse: vibrations perpendicular to the direction of…
Correct answer: Transverse wave- A. Observed frequency is greater than original frequency
- B. Observed frequency is less than original frequency
- C. Observed frequency is equal to original frequency
- D. Observed frequency is independent of original frequency
Explanation: As the listener moves towards a stationary source, the apparent frequency heard by the listener increases, while the original frequency of…
Correct answer: Observed frequency is greater than original frequency- A. 1200
- B. 1400
- C. 1600
- D. 1800
- E. 4800
Explanation: We know that The intensity of a wave is directly proportional to the square of its amplitude Mathematically-> I x a2HereI = intensitya =…
Correct answer: 4800- A. 2π
- B. 2.5π
- C. 3π
- D. 1π
Explanation: λ= 20cm = 0.2 mΦ= ?Δd = 25 cm = 0.25 mΦ= kΔd k is wave number [ k = 2π/λ]Φ=2π/λΔd= 2π/0.2 *0.25 = 2.5 π
Correct answer: 2.5π- A. Wavelength decreases and speed does not change
- B. Wavelength increases and speed does not change
- C. Wavelength increases and speed increases
- D. Wavelength increases and speed decreases
Explanation: According to wave equation: v = f ƛ Here , ƛ = v/f As the source moves away from observer , the frequency decrease and speed of sound is…
Correct answer: Wavelength increases and speed does not change- A. π/4
- B. π/2
- C. 0
- D. 2π
Explanation: When a wave is reflected from a denser medium to a rarer medium, the wave does not experience a phase change; thus, the correct answer is…
Correct answer: 0- A. Crests and troughs
- B. Compression and rarefactions
- C. Crests and compressions
- D. Troughs and rarefactions
Explanation: A longitudinal wave consists of compressions and rarefactions. Compressions are regions of high pressure and density, while rarefactions…
Correct answer: Compression and rarefactions- A. Intensity of sound
- B. Frequency of sound
- C. Wavelength of sound
- D. Pitch of sound
Explanation: The loudness of a sound relates the intensity of any given sound to the intensity at the threshold of hearing.
Correct answer: Intensity of sound- A. Wavelength
- B. Amplitude
- C. Frequency
- D. Crest
Explanation: The amplitude of a wave is the maximum displacement of particles on either side of the equilibrium or mean position of the wave.
Correct answer: Amplitude- A. 2m
- B. 1.5 m
- C. 1m
- D. 0.5 m
Explanation: Two waveforms are shown, the total wavelengths being 2 which leads to the individual wavelength being 1 m
Correct answer: 1m- A. Wave front
- B. Wave crest
- C. Wave trough
- D. Wave length
Explanation: The wave crest is the highest point of a transverse wave, above the mean level.
Correct answer: Wave crest38. 20 waves pass through a point in a medium in 5 seconds. What is the time required to pass one wave?
- A. 1/4 sec
- B. 4 sec
- C. 1/2 sec
- D. 2 sec
Explanation: A. 20/5 gives the frequency (waves per second) and the inverse of this gives the time period for each wave, which is ¼ seconds. f = no.
Correct answer: 1/4 sec- A. 8 cm
- B. 9 cm
- C. 1 cm
- D. 12 cm
Explanation: Δθ= 2π(ΔS)/λ λ = 2π(ΔS)/Δθ = 2π (3* 10-2)/3π/4 = 4*2*10-2 = 8cm
Correct answer: 8 cm- A. Wave length
- B. Amplitude
- C. Displacement
- D. None of these options are correct
Explanation: OPTION A: Distance between two consecutive crests, two consecutive troughs, or any two in-phase points can be labeled as a…
Correct answer: Wave length