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 51 of 65
- A. 50 cm
- B. 200 cm
- C. 100 cm
- D. 10 cm
Explanation: The string, with a length of 2 meters, vibrates in two loops. This means each loop is 1 meter long.
Correct answer: 50 cm- A. λ/4
- B. 3λ/4
- C. λ/2
- D. λ
Explanation: In wave motion, particles that are in the same phase are separated by a full wavelength.
Correct answer: λ- A. π/4
- B. π
- C. π/2
- D. 2π
Explanation: Option B is correct because the distance between two consecutive antinodes is λ/2 = x and the phase difference= 2πx/λ = 2π/λ . λ/2 = π
Correct answer: π- A. L = 3λ/4
- B. L = λ/2
- C. L = 3λ/2
- D. L = 2λ/3
Explanation: The formula for the relation between wavelength (λ), number of loops (n) is 3, and length (L) is:λ = 2L/nL = nλ/2L = 3λ/2
Correct answer: L = 3λ/2- A. Even
- B. Just multiple of 5
- C. Odd
- D. All of these
Explanation: In a pipe closed at one end, only odd harmonics are present due to the boundary conditions: the closed end is a node where there is no…
Correct answer: Odd- A. K.E
- B. Thermal energy
- C. P.E
- D. All of these
Explanation: At the extreme position the speed is zero so the kinetic energy will also be zero as K.E = 1/2 x m x v2.
Correct answer: P.E- A. 1024
- B. 512
- C. 256
- D. 128
Explanation: The fundamental frequency of a tube closed at one end is given by:f = v / 4LWhere v is the speed of sound in air, and L is the length of…
Correct answer: 1024- A. Air
- B. Water
- C. Vacuum
- D. Steel
Explanation: The reason why the velocity of sound is highest in steel is because steel is a denser medium than air, water, or vacuum.
Correct answer: Steel- A. Solids
- B. Liquids
- C. Gases
- D. Plasma
Explanation: The speed of sound is highest in solids because the particles in a solid are closely packed together.
Correct answer: Solids- A. Amplitude
- B. Time period
- C. Wavelength
- D. Frequency
Explanation: (a) Amplitude: The amplitude of a wave represents the maximum displacement or height of the wave.
Correct answer: Amplitude- A. λ/4
- B. λ/2
- C. λ
- D. 2λ
Explanation: (a) Option 1: The length between a node and an antinode is λ/4. This means that it is one-fourth of the wavelength.
Correct answer: λ/4- A. Mechanical wave
- B. Standing wave
- C. Matter wave
- D. Electromagnetic wave
Explanation: (A) Option 1: Mechanical wave. Mechanical waves, like sound waves and water waves, do transmit energy.
Correct answer: Standing wave1013. The number of quantization frequency of stationary wave in pipe when its one end is closed is:
- A. Whole number
- B. Natural number
- C. Even number
- D. Odd number
Explanation: (A) Option A: Whole number. This option states that the quantization frequency of a stationary wave in a pipe with one end closed is a…
Correct answer: Odd number- A. Zero
- B. Minimum
- C. Maximum
- D. Infinity
Explanation: Please note that the correct option is c) Maximum. In the absence of damping force, when the driving frequency matches the natural…
Correct answer: Maximum- A. Doubled
- B. Halved
- C. Constant
- D. One fourth
Explanation: Please note that the correct option for the change in the speed of a transverse wave on a string, when the tension is doubled and the mass…
Correct answer: Doubled- A. 1.0 x 10^6Hz
- B. 1.0 x 10^9Hz
- C. 1.0 x 10^12Hz
- D. 1.0 x 10^15Hz
Explanation: The frequency of ultraviolet radiation can indeed be around 1.0 x 10^15 Hz.
Correct answer: 1.0 x 10^15Hz- A. f
- B. 0.5 f
- C. 2f
- D. 4f
Explanation: There is a formula that relates the fundamental frequency of a closed organ pipe to its length.
Correct answer: 2f- A. 1.22v
- B. 0.61v
- C. 1.50v
- D. 0.75v
Explanation: (SOLUTION1) Speed of sound V= (T/m)square root Where m is the mass per unit length From here we can see that V is proportional to…
Correct answer: 1.22v- A. 409
- B. 429
- C. 517
- D. 500
Explanation: Following is the solution to this question:
Correct answer: 500- A. 8/3
- B. 3/8
- C. 1/6
- D. 1/3
Explanation: Following is the solution to this question:
Correct answer: 1/6