Sound
ICSE · Class 10 · Physics
Practice quiz for Sound — ICSE Class 10 Physics. MCQs and questions with answers to test your preparation.
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What is the minimum distance required between the observer and the obstacle to hear an echo distinctly?
The frequency range of human audibility is:
What happens to the amplitude in damped vibrations?
The unit of loudness is:
Sample Questions
Which of the following are characteristics of musical sound? (Select all correct answers)
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Loudness, Pitch, Quality
The three characteristics of musical sound are: Loudness (related to amplitude), Pitch (related to frequency), and Quality or Timbre (related to waveform).
Which of the following are examples of free vibrations? (Select all correct answers)
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Vibrations of a simple pendulum (neglecting air resistance), Vibrations of a tuning fork struck against rubber pad, Vibrations of a loaded spiral spring
Free vibrations occur without external force. Examples include simple pendulum (neglecting resistance), struck tuning fork, and loaded spring. Table vibrations and diaphragm vibrations are forced vibrations.
SONAR works on the principle of:
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Reflection of sound
SONAR (Sound Navigation and Ranging) works on the principle of reflection of sound waves. Ultrasonic waves are sent and their echoes are received to determine distance and location of objects.
Resonance occurs when:
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Applied frequency equals natural frequency
Resonance occurs when the frequency of the externally applied periodic force matches exactly with the natural frequency of vibration of the body, resulting in maximum amplitude.
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