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Unit - 7.1 Characteristics Of Sound PHYSICS - Unit - 7.1 Characteristics Of Sound

ICSE - STD 8 - PHYSICS (ICSE - English Medium). 41 questions in this chapter.

Question types

Unit - 7.1 Characteristics Of Sound question types

41 questions across 5 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

41
Questions
5
Question groups
5
Question types
Sample Questions

Unit - 7.1 Characteristics Of Sound questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Loudness does not change with the change in :
  • ✓
    frequency
  • B
    amplitude
  • C
    distance from source of sound
  • D
    presence of other reflectors

Answer: A.

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Q 2MCQ1 Mark
The pitch of sound does not depend upon
  • A
    thickness of vibrating wire
  • B
    area of cross-section of vibrating wire
  • ✓
    amplitude of vibrating wire
  • D
    length of vibrating wire

Answer: C.

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Q 3MCQ1 Mark
The frequency of sound increases when the closed length of an air column :
  • ✓
    increases
  • B
    decreases
  • C
    remains same
  • D
    none of these

Answer: A.

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Q 4MCQ1 Mark
The frequency of ultrasonic waves is :
  • A
    less than 20 Hz
  • B
    between 20 and 10,000 Hz
  • C
    between 20 and 20,000 Hz
  • ✓
    above 20,000 Hz

Answer: D.

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Q 5MCQ1 Mark
The number of vibrations made by a vibrating body in one second is called :
  • A
    wavelength
  • ✓
    frequency
  • C
    time period
  • D
    amplitude

Answer: B.

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Q 21Match the following.5 Marks
Column AColumn B
1. A sound wave of frequency less than 20 Hz .(a) Quality of sound
2. The repetition of sound on reflection from some hill or high-rise building.(b) Sonar
3. An instrument used to measure the depth of sea.(c) Frequency
4. Number of vibrations made by a body in one second.(d) Echo
5. Term used to describe two sounds of same loudness and same frequency, yet they can be distinguished from each other.(e) Infrasonic
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