Superposition of Waves
Physics ⇒ Waves and Sound
Superposition of Waves starts at 10 and continues till grade 12.
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See sample questions for grade 11
Describe the difference between a node and an antinode in a standing wave.
Describe what is meant by constructive and destructive interference.
Explain why beats are heard when two sound waves of slightly different frequencies interfere.
Explain why two light waves from different lamps do not produce a sustained interference pattern.
If two waves interfere constructively, what happens to the amplitude at the point of superposition?
A string of length 1 m is fixed at both ends and vibrates in its fundamental mode. If the speed of the wave is 200 m/s, what is the frequency of the fundamental?
A sound wave of frequency 500 Hz and another of frequency 505 Hz are played together. If the amplitude of each wave is 2 units, what is the maximum and minimum amplitude heard due to superposition?
A string of length 1.2 m is fixed at both ends. It supports a standing wave pattern with 4 antinodes. If the speed of the wave on the string is 180 m/s, what is the frequency of the wave?
Which of the following best describes a node in a standing wave?
(1) A point of maximum displacement
(2) A point of zero displacement
(3) A point where two waves cross
(4) A point of maximum velocity
Which of the following conditions is necessary for sustained interference?
(1) The sources must be coherent
(2) The sources must have different frequencies
(3) The sources must be far apart
(4) The sources must be of different amplitudes
Which of the following is a necessary condition for the formation of standing waves?
(1) Two waves of different frequencies
(2) Two waves of equal amplitude and frequency traveling in opposite directions
(3) Two waves of different amplitudes
(4) Two waves traveling in the same direction
Which of the following is NOT a result of the superposition of waves?
(1) Interference
(2) Diffraction
(3) Reflection
(4) Formation of standing waves
Fill in the blank: The distance between two consecutive nodes in a standing wave is __________.
Fill in the blank: The number of beats heard per second is equal to the __________ of the two frequencies.
Fill in the blank: The points of maximum amplitude in a standing wave are called __________.
Fill in the blank: The points of zero amplitude in a standing wave are called __________.
True or False: Superposition of two waves always results in an increase in amplitude.
True or False: The superposition principle applies only to linear waves.
True or False: The superposition principle can be applied to both mechanical and electromagnetic waves.
True or False: The superposition principle can be used to predict the resultant displacement at a point where more than two waves overlap.
