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Unit - 6.1 Sound, Its Production and Propagation PHYSICS - Unit - 6.1 Sound, Its Production and Propagation

ICSE - STD 7 - PHYSICS (ICSE - English Medium). 29 questions in this chapter.

Question types

Unit - 6.1 Sound, Its Production and Propagation question types

29 questions across 7 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

29
Questions
7
Question groups
5
Question types
Sample Questions

Unit - 6.1 Sound, Its Production and Propagation 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
An observer puts ear on a railway line 500 m from a friend with a hammer. When his friend hits the railway line with the hammer, the observer hears two sounds. The sound is first heard through :
  • ✓
    Railway line
  • B
    Air
  • C
    At the same time through railway line and air
  • D
    No sound is heard

Answer: A.

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Q 2MCQ1 Mark
The approximate speed of sound in air at room temperature is :
  • A
    33.2 ms-1
  • B
    3320 ms-1
  • C
    3.32 ms-1
  • ✓
    332 ms-1

Answer: D.

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Q 3MCQ1 Mark
The crack of a thunder cloud is heard later than the flash of lightning because, the light travels :
  • A
    Much slower than sound
  • ✓
    Much faster than sound
  • C
    At the same speed as sound
  • D
    None of these

Answer: B.

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Q 4MCQ1 Mark
The convenient instrument used in laboratory to produce pure sound is :
  • A
    Whistle
  • B
    Drum
  • ✓
    Tuning fork
  • D
    Guitar

Answer: C.

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Q 5MCQ1 Mark
An electric bell is suspended in a bell jar and then air is removed from it. On switching on the electric bell, the sound heard is :
  • A
    Very loud
  • B
    Normal sound
  • C
    Weak sound
  • ✓
    No sound is heard

Answer: D.

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Q 9[1 Mark Question Answer]1 Mark
Given below statement is incorrect. Write the correct statement :
When the sound travels in air, the particles of air vibrate differently compared to the vibrations of the vibrating body.
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Q 23TRUE / FALSE1 Mark
The speed of sound can be calculated is we know the distance between the source of sound and observer and the temperature of air
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Q 27Match The Following.5 Marks
Column AColumn B
1.A device used as a convenient source of sound in laboratory.(a)5100
2.The motion of the particles of a medium about their mean positions.(b)1500
3.A medium through which sound cannot pass.(c)Vibration
4.Approximate speed of sound in steel at room temperature.(d)Tuning fork
5.Approximate speed of sound in water at room temperature.(e)Vacuum
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