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Sound Science - Sound

Maharashtra Board - STD 8 - Science (MSBSHSE - Semi English Medium). 139 questions in this chapter.

Question types

Sound question types

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

139
Questions
7
Question groups
5
Question types
Sample Questions

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
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros?
  • A
    $5 \ \ce{KHz}.$
  • B
    $25 \ \ce{Hz}.$
  • ✓
    $10 \ \ce{Hz}.$
  • D
    $15,000 \ \ce{Hz}.$

Answer: C.

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Q 2MCQ1 Mark
A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case:
  • ✓
    Sound will be louder but pitch will not be different.
  • B
    Sound will be louder and the pitch will also be higher.
  • C
    Sound will be louder but pitch will be lower.
  • D
    Both loudness and pitch will remain unaffected.

Answer: A.

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Q 3MCQ1 Mark
When we change a feeble sound to a loud sound, we increase its:
  • A
    Frequency.
  • ✓
    Amplitude.
  • C
    Speed.
  • D
    Timbre.

Answer: B.

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Q 4MCQ1 Mark
he velocities of sound waves in four media $\ce{P, Q, R}$ and $\ce{S}$ are $18,000\ \ce{km/h, 900\ km/h, 0 \ km/h},$ and $1200 \ \ce{km/h}$ respectively. Which medium could be a liquid substance?
  • A
    $P.$
  • B
    $Q.$
  • C
    $R.$
  • ✓
    $S.$

Answer: D.

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Q 5MCQ1 Mark
The frequencies of four sound waves are given below. Which of these sound waves can be used to measure the depth of sea?
  • A
    $15,000\ \ce{Hz}.$
  • B
    $10\ \ce{KHz}.$
  • ✓
    $50\ \ce{KHz}.$
  • D
    $10,000 \ \ce{Hz}.$

Answer: C.

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Q 22Question Answer (3 Marks)3 Marks
Three different vibrating objects produce three types of sounds X, Y and Z. The sounds X and Y cannot be heard by a man having normal range of hearing but sound Z can be heard easily. The sound X can be heard by a bat whereas the sound Y can be heard by a rhinoceros. What type of sounds are X, Y and Z?
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Q 24Question Answer (3 Marks)3 Marks
Your parents are going to buy a house. They have been offered one house on the roadside and another house three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer.
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Q 34true or false1 Mark
State whether the following statements are true or false:
The number of oscillations per second of a vibrating object is called its time-period.
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