Questions & Answers: "Sound"
Complete guide to "Sound" for Physics students. Below you will find important questions and model answers to help you prepare.
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We are building a dedicated quiz for this topic, but you can test your skills on a similar concept: NCERT-IX Gravitation: Practice Set 1.
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Exemplar
9 QuestionsNote is a sound
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of mixture of several frequencies
of mixture of two frequencies only
of a single frequency
always unpleasant to listen
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
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sound will be louder, but pitch will not be different
sound will be louder, and pitch will also be higher
sound will be louder, but pitch will be lower
both loudness and pitch will remain unaffected
In SONAR, we use
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ultrasonic waves
infrasonic waves
radio waves
audible sound waves
Sound travels in air if
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particles of medium travel from one place to another
there is no moisture in the atmosphere
disturbance moves
both particles as well as disturbance travel from one place to another
When we change feeble sound to loud sound, we increase its
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frequency
amplitude
velocity
wavelength
Earthquake produces which kind of sound before the main shock wave begins
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ultrasound
infrasound
audible sound
none of the above
Infrasound can be heard by
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dog
bat
rhinoceros
human beings
Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting
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intensity of sound only
amplitude of sound only
frequency of the sitar string with the frequency of other musical instruments
loudness of sound