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Loudness and Pitch

Which figure ...

Question

Which figure indicates vibrations of sound produced by noise

A

(i) only

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B

(ii) only

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C

(i) and (ii)

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D

None

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Solution

The correct option is C (ii) only
Noise is an unwanted disturbance in an electrical signal. Noise generated by electronic devices varies greatly as it is produced by several different effects. In communication systems, noise is an error or undesired random disturbance of a useful information signal.

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Similar questions

Q. Question 3
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only

Only the vibrating bodies can produce sound.

Q. Question 3
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only

Q. Only vibrating bodies produce sound. State true or false

Q. Sound is produced by vibration. Define vibration.

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