0 of 9 questions completed
Questions:
 1
 2
 3
 4
 5
 6
 7
 8
 9
Information
Quiz Description :
Name: Wave Motion and Sound mcqs : Physics quiz
Subject: Physics
Topic: Wave Motion and Sound
Questions: 9
Time Allowed: 15 minutes
Important for: 11th & 12th school students, Engineering & Medical entrance exams etc.
You have already completed the Test before. Hence you can not start it again.
Test is loading...
You must sign in or sign up to start the Test.
You have to finish following quiz, to start this Test:
Congratulations!!!" Wave Motion and Sound mcqs : Physics quiz "
0 of 9 questions answered correctly
Your time:
Time has elapsed
Your Final Score is : 0
You have attempted : 0
Number of Correct Questions : 0 and scored 0
Number of Incorrect Questions : 0 and Negative marks 0
Average score  
Your score 

Not categorized
You have attempted: 0
Number of Correct Questions: 0 and scored 0
Number of Incorrect Questions: 0 and Negative marks 0
It’s time to share this quiz with your friends on Facebook, Twitter, Google Plus, Whatsapp or LinkedIn…
Pos.  Name  Entered on  Points  Result 

Table is loading  
No data available  
 1
 2
 3
 4
 5
 6
 7
 8
 9
 Answered
 Review
 Question 1 of 9
1. Question
1 pointsWhich of the following is different from others?
CorrectWe know that the velocity, wavelength and frequency are related with each other as v = ν × h, whereas amplitude is not related to any one of these.
Therefore amplitude is different from the remaining three.IncorrectWe know that the velocity, wavelength and frequency are related with each other as v = ν × h, whereas amplitude is not related to any one of these.
Therefore amplitude is different from the remaining three.UnattemptedWe know that the velocity, wavelength and frequency are related with each other as v = ν × h, whereas amplitude is not related to any one of these.
Therefore amplitude is different from the remaining three.  Question 2 of 9
2. Question
1 pointsWith the propagation of a longitudinal wave through a material medium, which of the following quantity is transmitted in the direction of its propagation?
CorrectWe know that with the propagation of a longitudinal wave through a material medium, only energy is transmitted in the direction of its propagation.
IncorrectWe know that with the propagation of a longitudinal wave through a material medium, only energy is transmitted in the direction of its propagation.
UnattemptedWe know that with the propagation of a longitudinal wave through a material medium, only energy is transmitted in the direction of its propagation.
 Question 3 of 9
3. Question
1 pointsThe waves produced by a motorboat, sailing in water, are
CorrectWe know that waves produced by a motorboat, sailing in water, are transverse on the surface and longitudinal inside the water.
IncorrectWe know that waves produced by a motorboat, sailing in water, are transverse on the surface and longitudinal inside the water.
UnattemptedWe know that waves produced by a motorboat, sailing in water, are transverse on the surface and longitudinal inside the water.
 Question 4 of 9
4. Question
1 pointsWhich of the following is an example of transverse wave?
CorrectWe know that a transverse wave is a wave, in which particles of the medium vibrate about their mean position in a direction at right angles to the direction of propagation of the wave. Thus vibration of the string is the example of transverse wave.
IncorrectWe know that a transverse wave is a wave, in which particles of the medium vibrate about their mean position in a direction at right angles to the direction of propagation of the wave. Thus vibration of the string is the example of transverse wave.
UnattemptedWe know that a transverse wave is a wave, in which particles of the medium vibrate about their mean position in a direction at right angles to the direction of propagation of the wave. Thus vibration of the string is the example of transverse wave.
 Question 5 of 9
5. Question
1 pointsTwo sound waves having a phase difference of 60° have path difference of
CorrectWe have, phase difference (Δϕ) = 60° = π/3 rad
We know that path difference = (Δx) = (λ/2π)×Δϕ = (λ/2π) × π/3 = π/6IncorrectWe have, phase difference (Δϕ) = 60° = π/3 rad
We know that path difference = (Δx) = (λ/2π)×Δϕ = (λ/2π) × π/3 = π/6UnattemptedWe have, phase difference (Δϕ) = 60° = π/3 rad
We know that path difference = (Δx) = (λ/2π)×Δϕ = (λ/2π) × π/3 = π/6  Question 6 of 9
6. Question
1 pointsTwo waves are approaching each other with a velocity of 20 ms^{1} and frequency ν. The distance between two consecutive nodes is
CorrectWe have, velocity of waves (v) = 20 ms^{1} and frequency of waves = ν.
We know that distance between two consecutive nodes = λ/2 = v/(2ν) = 20/ 2ν = 10/νIncorrectWe have, velocity of waves (v) = 20 ms^{1} and frequency of waves = ν.
We know that distance between two consecutive nodes = λ/2 = v/(2ν) = 20/ 2ν = 10/νUnattemptedWe have, velocity of waves (v) = 20 ms^{1} and frequency of waves = ν.
We know that distance between two consecutive nodes = λ/2 = v/(2ν) = 20/ 2ν = 10/ν  Question 7 of 9
7. Question
1 pointsIf the phase difference between two points is 60° on a wave velocity of 360 ms^{1} and frequency 500 Hz, then path difference between the two points is
CorrectWe have, phase difference between two points (Δϕ) = 60° = π/3 rad;
Velocity of wave (v) = 360 ms^{1} and frequency of wave (ν) = 500 Hz
We know that wavelength of a wave (λ) = v/ν = 360/500 = 0.72m
Therefore path difference between two points (Δx) = [λ/(2π)]×Δϕ = [0.72/2π]×[π/3] = 0.12mIncorrectWe have, phase difference between two points (Δϕ) = 60° = π/3 rad;
Velocity of wave (v) = 360 ms^{1} and frequency of wave (ν) = 500 Hz
We know that wavelength of a wave (λ) = v/ν = 360/500 = 0.72m
Therefore path difference between two points (Δx) = [λ/(2π)]×Δϕ = [0.72/2π]×[π/3] = 0.12mUnattemptedWe have, phase difference between two points (Δϕ) = 60° = π/3 rad;
Velocity of wave (v) = 360 ms^{1} and frequency of wave (ν) = 500 Hz
We know that wavelength of a wave (λ) = v/ν = 360/500 = 0.72m
Therefore path difference between two points (Δx) = [λ/(2π)]×Δϕ = [0.72/2π]×[π/3] = 0.12m  Question 8 of 9
8. Question
1 pointsThe displacement of a wave is given by the equation:
_{y=10 sin[(2πt/30)+α].}If the displacement is 5cm at t=0, then angle described by the wave at t=7.5s will be
CorrectWe have, equation of wave: _{y=10 sin[(2πt/30)+α]}; Displacement (y) = 5cm; Initial time (t_{1}) = 0 and Final time (t_{2}) = 7.5s
We know that displacement of wave at t = 0, 5 = 10 sin α or sin α = 1/2 or α = π/6
Therefore angle described by the wave at t=7.5s, (θ) = [(2πt)/30]+α = 2π/3 rad.IncorrectWe have, equation of wave: _{y=10 sin[(2πt/30)+α]}; Displacement (y) = 5cm; Initial time (t_{1}) = 0 and Final time (t_{2}) = 7.5s
We know that displacement of wave at t = 0, 5 = 10 sin α or sin α = 1/2 or α = π/6
Therefore angle described by the wave at t=7.5s, (θ) = [(2πt)/30]+α = 2π/3 rad.UnattemptedWe have, equation of wave: _{y=10 sin[(2πt/30)+α]}; Displacement (y) = 5cm; Initial time (t_{1}) = 0 and Final time (t_{2}) = 7.5s
We know that displacement of wave at t = 0, 5 = 10 sin α or sin α = 1/2 or α = π/6
Therefore angle described by the wave at t=7.5s, (θ) = [(2πt)/30]+α = 2π/3 rad.  Question 9 of 9
9. Question
1 pointsIn a function, A sings with certain frequency and B sings with a frequency of 1/8 of A. If energy remains the same and amplitude of A is ‘a’, then amplitude of B is
CorrectWe have, Frequecny of A(v_{A}) = v; Frequency of B(v_{B}) = v/8 and amplitude of A(a_{A})=a.
We know that energy of a wave (E) = 1/2 mv^{2} = 1/2 m (a^{2}) = 1/2 ma^{2} (2πv)^{2 }∝ a^{2}v^{2}
Therefore; a_{B} = 8a_{A} = 8aIncorrectWe have, Frequecny of A(v_{A}) = v; Frequency of B(v_{B}) = v/8 and amplitude of A(a_{A})=a.
We know that energy of a wave (E) = 1/2 mv^{2} = 1/2 m (a^{2}) = 1/2 ma^{2} (2πv)^{2 }∝ a^{2}v^{2}
Therefore; a_{B} = 8a_{A} = 8aUnattemptedWe have, Frequecny of A(v_{A}) = v; Frequency of B(v_{B}) = v/8 and amplitude of A(a_{A})=a.
We know that energy of a wave (E) = 1/2 mv^{2} = 1/2 m (a^{2}) = 1/2 ma^{2} (2πv)^{2 }∝ a^{2}v^{2}
Therefore; a_{B} = 8a_{A} = 8a