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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

If a drum is beaten hard, its loudness ................

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प्रश्न

If a drum is beaten hard, its loudness ................

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उत्तर

increases.

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पाठ 7: Sound - Objective questions [पृष्ठ १३५]

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सेलिना Concise Physics [English] Class 8 ICSE
पाठ 7 Sound
Objective questions | Q 2.05 | पृष्ठ १३५

संबंधित प्रश्‍न

Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?


Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.

How do they differ in
(a) loudness,
(b) pitch and
(c) quality


Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and (ii) pitch


Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound board?


Write down the relation between wavelength, frequency and wave-velocity.

Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.


Three musical instruments give out notes at the frequencies listed below. Flute: 400 Hz; Guitar: 200 Hz; Trumpet: 500 Hz. Which one of these has the highest pitch?


Two musical notes of the same pitch and loudness are played on a violin and a piano. Their waveforms are as shown in the figure below:


The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.


Give scientific reason.

In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.


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