Test: Sound - 1


Test Description

10 Questions MCQ Test General Science(Prelims) by IRS Divey Sethi | Test: Sound - 1

Test: Sound - 1 for UPSC 2022 is part of General Science(Prelims) by IRS Divey Sethi preparation. The Test: Sound - 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Sound - 1 MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Sound - 1 below.
Solutions of Test: Sound - 1 questions in English are available as part of our General Science(Prelims) by IRS Divey Sethi for UPSC & Test: Sound - 1 solutions in Hindi for General Science(Prelims) by IRS Divey Sethi course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Sound - 1 | 10 questions in 10 minutes | Mock test for UPSC preparation | Free important questions MCQ to study General Science(Prelims) by IRS Divey Sethi for UPSC Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Test: Sound - 1 - Question 1

Pitch of sound depends upon

Detailed Solution for Test: Sound - 1 - Question 1
  • Pitch is that characteristic of a musical sound by which a shrill sound can be distinguished from a grave one, even though the two sounds may be of the same intensity.
  • It is also defined as that characteristic of sound by which the ear assigns it a place on a musical scale.
  • When a stretched string is plucked, a sound of a certain pitch sensation is produced.
  • 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.
  • But frequency alone does not determine the pitch. Below 1000Hz, the pitch is slightly higher than the frequency and above 1000Hz the position is reversed.
  • The loudness of sound also affects the pitch up to 1000Hz. An increase in loudness causes a decrease in pitch. From about 1000 to 3000Hz, the pitch is independent of loudness, while above 3000Hz an increase in loudness causes an increase in pitch.

Hence, pitch of sound depends upon its frequency.

Test: Sound - 1 - Question 2

What is the length of vocal cords in men?

Detailed Solution for Test: Sound - 1 - Question 2

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 3

Sound is produced by

Detailed Solution for Test: Sound - 1 - Question 3
  • 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 4

The hearing range of human ear is

Detailed Solution for Test: Sound - 1 - Question 4
  • The audible range for human beings is about 20Hz to 20,000Hz. This frequency is required to generate vibrations in the tympanic membrane. 
  • If any sounds exceed this range, the sound remains undetected, whatever the amplitude may be. 
Test: Sound - 1 - Question 5

When a tightly stretched band is plucked, it

Detailed Solution for Test: Sound - 1 - Question 5

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 6

Which of the following factor influence speed of sound most?

Detailed Solution for Test: Sound - 1 - Question 6

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.

Test: Sound - 1 - Question 7

 1 hertz is equal to

Detailed Solution for Test: Sound - 1 - Question 7

1Hz= 1 vibration/second

1 minute=60 seconds
Hence, 1 hertz = 60 vibrations /minute

Test: Sound - 1 - Question 8

In most of the cases vibration of objects are not visible because

Detailed Solution for Test: Sound - 1 - Question 8
  • 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.
Test: Sound - 1 - Question 9

Loudness of sound depends upon its

Detailed Solution for Test: Sound - 1 - Question 9
  • 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 10

Vibrating part of flute is

Detailed Solution for Test: Sound - 1 - Question 10

Sound is produced by vibration of body. In flute, the vibrating part is air column inside the flute.

Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about Test: Sound - 1 Page
In this test you can find the Exam questions for Test: Sound - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Sound - 1, EduRev gives you an ample number of Online tests for practice