Free Waves MCQs with Answers
1,281 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 oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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1,281 questions · page 28 of 65
- A. 90 degree
- B. 180 degreee
- C. 270 degree
- D. 150 degree
Explanation: The ange between node and antinode is 90 degree.The angle between two nodes or two antinodes (or adjacent crests and troughs) is 180…
Correct answer: 90 degree- A. fn = n * fl
- B. fn = n + fl
- C. fn =fl/ n
- D. n * fn = fl
Explanation: The correct relationship between the number of loops (n) in a vibrating spring and the frequency (f) of the stationary waves set up on the…
Correct answer: fn = n * fl- A. Created at the maximum position
- B. Destroyed at the position of minimum
- C. Conserved but redistributed
- D. Both conserved
Explanation: Ar = A1 + A2 (Constructive)Ar = A1 - A2 (Destructive)As the intensity is directly propotional to square of amplitudeI = k.A2 (k=1)I =…
Correct answer: Conserved but redistributed- A. Reflection.
- B. Ultrasonic.
- C. Supersonic.
- D. Superposition.
Explanation: The correct answer is superposition. The principle of superposition describes how when two or more waves overlap, their individual…
Correct answer: Superposition.- A. Formation of beats.
- B. Destructive interference.
- C. Production of resonance.
- D. Constructive interference.
Explanation: The correct answer is destructive interference. This phenomenon occurs when two sound waves meet in such a way that the crest of one wave…
Correct answer: Destructive interference.- A. Y = (m+1) λL/d
- B. Y = (m - 1)λL/d
- C. Y = (m + 1/2)λL/d
- D. Y = (m - 1/2) λd/L
Explanation: In Young's double-slit experiment, the position of the dark fringes is given by the formula Y = (m + 1/2)λL/d, where m is the order of the…
Correct answer: Y = (m + 1/2)λL/d- A. Scattering of light
- B. Dispersion of light
- C. Diffraction of light
- D. Interference of light
Explanation: The correct answer is interference of light. In soap films, colors are visible due to the interference of light.
Correct answer: Interference of light- A. Beats.
- B. Free vibrations.
- C. Forced vibrations.
- D. Damped oscillations.
Explanation: The correct answer is beats. When a wooden drum is beaten, it produces sound waves that can slightly differ in frequency, leading to the…
Correct answer: Beats.- A. Beat.
- B. Waveform.
- C. Diffraction.
- D. Polarisation.
Explanation: The correct answer is beat. When two tuning forks with nearly the same frequencies are sounded together, they produce interference…
Correct answer: Beat.- A. 2 Hz.
- B. 126 Hz.
- C. 128 Hz.
- D. 256 Hz.
Explanation: When two sound waves with close frequencies are played together, they produce beats.
Correct answer: 2 Hz.- A. A playground swing
- B. Shock absorbers of a car.
- C. Turning the knob of the radio set.
- D. A music system playing on a heavy beat.
Explanation: The correct answer is Option B: shock absorbers of a car. Shock absorbers are used to dampen or reduce the amplitude of vibrations, not to…
Correct answer: Shock absorbers of a car.- A. I only.
- B. III only.
- C. I and II.
- D. II and III.
Explanation: The correct answer is III only. Beats occur due to the interference of two waves with slightly different frequencies.
Correct answer: III only.- A. 4x.
- B. 2x.
- C. x / 2.
- D. x / 4.
Explanation: In Young's double slit experiment, the fringe spacing (Δy) is given by the formula Δy = λL/d, where λ is the wavelength of light, L is the…
Correct answer: x / 4.- A. Reflection of light.
- B. Refraction of light.
- C. Diffraction of light.
- D. Interference of light.
Explanation: The correct answer is interference of light. Newton's rings are formed due to the interference of light waves reflected from the top and…
Correct answer: Interference of light.- A. Density of oil.
- B. Angle of view.
- C. Index of refraction.
- D. Thickness of the film.
Explanation: The thickness of the film is a critical factor in thin-film interference, which governs the colors reflected from an oil film on water.
Correct answer: Thickness of the film.556. The beat frequency of two waves produced by two different tuning forks 505 Hz and 512 Hz will be
- A. 7 Hz
- B. 6 Hz.
- C. 4 Hz.
- D. 0 Hz.
Explanation: The beat frequency of two waves is the absolute difference between their individual frequencies.Given: * Frequency of the first tuning…
Correct answer: 7 Hz- A. 1 m.
- B. 2 m.
- C. 10 m.
- D. 20 m.
Explanation: To find the wavelength, start by calculating the frequency: 20 sound waves pass in 2 seconds, so the frequency is 20 waves / 2 s = 10 Hz.
Correct answer: 2 m.- A. 1m
- B. 2m
- C. 10m
- D. 20m
Explanation: To find the wavelength (λ), use the formula λ = v/f, where v is the velocity of the wave and f is the frequency.
Correct answer: 2m- A. I only
- B. II only
- C. I and III
- D. II and III
Explanation: The speed of a wave on a string is given by the equation v = √(T/μ), where v is the speed, T is the tension in the string, and μ is the…
Correct answer: II only- A. 12.5 m/s.
- B. 25 m/s.
- C. 50 m/s.
- D. 100 m/s.
Explanation: * Understand the relationship between antinodes and wavelength: The distance between two consecutive antinodes in a wave is equal to half…
Correct answer: 50 m/s.