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UPSC Exam  >  UPSC Test  >  Science & Technology CSE  >  Test: Sound - 1 - UPSC MCQ

Sound - 1 - UPSC Sci & Tech Free MCQ Test with solutions


MCQ Practice Test & Solutions: Test: Sound - 1 (15 Questions)

You can prepare effectively for UPSC Science & Technology for UPSC CSE with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Sound - 1". These 15 questions have been designed by the experts with the latest curriculum of UPSC 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 15 minutes
  • - Number of Questions: 15

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Test: Sound - 1 - Question 1
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What is the range of frequencies that the human ear can typically hear?

Detailed Solution: Question 1

Our ears can usually hear sounds that range from 20 to 20,000 vibrations per second. This means we can hear many different sounds around us, from music to voices to noises like horns or construction sounds. It's like our ears have a special range for hearing different things!

Test: Sound - 1 - Question 2
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The frequency is expressed in __________ (Hz).

Detailed Solution: Question 2

The frequency of sound is expressed in Hertz (Hz), which measures the number of vibrations or cycles per second. This unit helps quantify the pitch of the sound.

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Test: Sound - 1 - Question 3
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Attempts should be made to __________ noise pollution.

Detailed Solution: Question 3

Efforts should be made to minimize noise pollution to reduce its harmful impact on human health and the environment. Measures such as planting trees and using soundproof materials can help.

Test: Sound - 1 - Question 4
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Which of the following factor influence speed of sound most?

Detailed Solution: Question 4

Speed of sound depends upon nature of medium, temperature, humidity and source of sound but nature of medium influence the speed of sound most. Sound travels faster in solid medium than air and water.

Old NCERT

Test: Sound - 1 - Question 5
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Pitch of sound depends upon

Detailed Solution: Question 5

If the tension in the string is increased, the pitch (the shrillness) becomes higher. Increasing the tension, also increases the frequency of vibration. Therefore, pitch is intimately related to frequency

Test: Sound - 1 - Question 6
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Excessive or unwanted sounds lead to __________ pollution.

Detailed Solution: Question 6

Excessive or unwanted sounds lead to noise pollution, which can have negative effects on human health and well-being, such as stress and hearing loss.

Test: Sound - 1 - Question 7
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Loudness of sound depends upon its

Detailed Solution: Question 7

  • Loudness is directly proportional to the square of the amplitude of sound waves.
  • If the amplitude is high then sound will be louder and the sound will be feeble if the amplitude is low.
  • Loudness is measured in units called decibels. 

Test: Sound - 1 - Question 8
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What is the length of vocal cords in men?

Detailed Solution: Question 8

The length of the vocal chords differs in men and women, which is why there is difference in the quality of their voice. The length of the vocal chord in men is approximately 20 mm and in women it is 15 mm.

Test: Sound - 1 - Question 9
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Dogs can hear sounds of frequencies higher than __________ Hz.

Detailed Solution: Question 9

Dogs have the ability to hear sounds that are higher than 20,000 vibrations per second. This means they can hear sounds that are very high-pitched, which humans cannot hear because they are too high for our ears to pick up.

Test: Sound - 1 - Question 10
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Vibration is also known as ____________________.

Detailed Solution: Question 10

- Vibration is also known as Oscillatory Motion.
- Explanation:
- Oscillatory Motion refers to a repetitive back-and-forth or to-and-fro motion around a central position.
- Vibratory motion involves a periodic motion about an equilibrium point.
- It is characterized by a regular and repeated pattern of movement.
- Correct Answer: C: Oscillatory Motion.

Test: Sound - 1 - Question 11
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Sound propagates maximum in

Detailed Solution: Question 11

Sound propagates best in:
Solids: Due to the tightly packed particles, sound waves can travel faster and more efficiently through solids..

Test: Sound - 1 - Question 12
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When a tightly stretched band is plucked, it

Detailed Solution: Question 12

When a tightly stretched band is plucked, it vibrate and produce sound due to disturbance in medium. When it stops vibrating, it does not produce any sound.

Test: Sound - 1 - Question 13
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Sound is produced by

Detailed Solution: Question 13

  • Sound is produced by vibration of object.
  • Vibration creates disturbance in medium which reaches to observer ear through air, water or solid medium.
  • In human, muscles push air up from lungs and through the narrow opening between the vocal cords. The force of the air causes the vocal cords to vibrate. The vibrating vocal cords produce sound waves.

Test: Sound - 1 - Question 14
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Higher the frequency of vibration, the __________ the pitch, and shriller the sound.

Detailed Solution: Question 14

The higher the frequency of vibration, the higher the pitch and shriller the sound. This means that sounds with higher frequencies are perceived as higher-pitched and more piercing.

Test: Sound - 1 - Question 15
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In most of the cases vibration of objects are not visible because

Detailed Solution: Question 15

  • The vibrations of object are not visible because in most of the cases amplitude of waves are very small.
  • The vibrations are easily visible when amplitude of waves is high.
  • Amplitude is the maximum displacement from mean position.

Old NCERT

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About this UPSC Practice Test

This test contains 15 MCQs on Sound - 1 with detailed solutions for each question. It is part of the Science & Technology for UPSC CSE course on EduRev, designed to align with the current UPSC syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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