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Waves Questions and Answers | Waves Multiple Choice Questions and Answers

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Free download in PDF Waves Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) A wave pulse travels a long a thick part of a horizontal cord and reaches another part of the cord which is much thinner and lighter. Which of the following is true about the reflected and transmitted pulse by the boundary in the cord?

[A] Upright Upright
[B] Upright Inverted
[C] Upright Inverted
[D] Inverted Upright
Answer: Upright Upright
(2) Two wave pulses with equal positive amplitudes travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?

[A] It is constructive interference with twice the amplitude
[B] It is destructive interference with zero amplitude
[C] It is constructive interference with slightly greater amplitude
[D] It is constructive interference with the negative amplitude
Answer: It is constructive interference with twice the amplitude
(3) Two wave pulses one with a positive amplitude the other with equal negative amplitude travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?
[A] It is constructive interference with twice the amplitude
[B] It is destructive interference with zero amplitude
[C] It is constructive interference with slightly greater amplitude
[D] It is constructive interference with the negative amplitude
Answer: It is destructive interference with zero amplitude
(4) What is the amplitude of oscillations?

[A] 0.5 cm
[B] 1 cm
[C] 2 cm
[D] 5 cm
Answer: 2 cm
(5) What is the wavelength of the wave?

[A] 0.5 cm
[B] 1 cm
[C] 2 cm
[D] 20 cm
Answer: 20 cm
(6) What is the amplitude of oscillations?

[A] 1 cm
[B] 2 cm
[C] 4 cm
[D] 6 cm
Answer: 4 cm
(7) What is the wavelength of the wave?

[A] 1 cm
[B] 2 cm
[C] 4 cm
[D] 6 cm
Answer: 2 cm
(8) A stretched string of length L = 2 m resonates in two loops. What is the wavelength of the wave?

[A] 1 m
[B] 2 m
[C] 3 m
[D] 4 m
Answer: 2 m
(9) A stretched string of length L = 6 m resonates in three loops. What is the wavelength of the wave?

[A] 1 m
[B] 2 m
[C] 3 m
[D] 4 m
Answer: The wave speed increases with increasing tension T
(10) A guitar string resonates at a frequency of 500 Hz forming a standing wave pattern with 5 loops. What is the fundamental frequency?
[A] 100 Hz
[B] 200 Hz
[C] 300 Hz
[D] 400 Hz
Answer: 100 Hz
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