Test: Sound - 2


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20 Questions MCQ Test General Science(Prelims) by IRS Divey Sethi | Test: Sound - 2

Test: Sound - 2 for UPSC 2022 is part of General Science(Prelims) by IRS Divey Sethi preparation. The Test: Sound - 2 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Sound - 2 MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Sound - 2 below.
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Test: Sound - 2 - Question 1

Sound of single frequency is called a

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The sound of single frequency is called tone. A number of tones together form a note of the sound.

Test: Sound - 2 - Question 2

The shape of the outer part of human ear is like a

Detailed Solution for Test: Sound - 2 - Question 2

Human ear consist of three parts- outer ear, middle ear and inner ear. The shape of outer ear is like a funnel through which vibration reaches to eardrum.

Test: Sound - 2 - Question 3

In which medium sound travels faster?

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The speed of sound depends upon the material medium in which sound is travelling. Sound travels faster in solid (metals) followed by water and air respectively.

Test: Sound - 2 - Question 4

Sound lost more energy in

Detailed Solution for Test: Sound - 2 - Question 4
As it travels, a sound wave's energy is slowly lost as heat. This happens because the molecules of the medium through which it is travelling knock against each other as they transmit the sound wave energy.
Because a gas, such as the air, presents less friction to a sound wave than a solid, it can travel a longer distance before all it's energy is lost. A solid barrier such as a wall, on the other hand, will quickly absorb the sound wave, and prevent it from travelling as far.
Test: Sound - 2 - Question 5

In human beings, sound is produced due to vibration of

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Vocal cords are situated in neck of human beings. Sound is produced due to vibration of vocal cords.

Test: Sound - 2 - Question 6

Pitch of sound depends upon

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The number of vibration per second is called frequency. The pitch of sound depends upon frequency of sound.

Test: Sound - 2 - Question 7

The time-period is

Detailed Solution for Test: Sound - 2 - Question 7

The time takes to complete one vibration is called time-period. Time period is inversely proportional to frequency. Time-period 1/frequency

Test: Sound - 2 - Question 8

Tympanic membrane is another name of

Detailed Solution for Test: Sound - 2 - Question 8

Tympanic membrane is another name of eardrum. When vibrations of audible range reach to eardrum it starts vibrating to produce sound.

Test: Sound - 2 - Question 9

Damage to which of the following parts of ear cause hearing impairment?

Detailed Solution for Test: Sound - 2 - Question 9

drum vibrates to produce sound which is interpreted by brain.

Test: Sound - 2 - Question 10

The nature of sound waves is

Detailed Solution for Test: Sound - 2 - Question 10

Sound wave is longitudinal wave as it consists of compression and rarefaction. The region of high density form compression and that of less density rarefaction.

Test: Sound - 2 - Question 11

Ultrasound equipment for investigating and tracking medical problems, works at frequency

Detailed Solution for Test: Sound - 2 - Question 11

Ultrasound equipment is used for investigating and tracking medical problems. The sound of frequency greater than 20000 Hz is called ultrasound.

Test: Sound - 2 - Question 12

The SI unit of frequency is

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The SI unit of frequency is

Test: Sound - 2 - Question 13

The minimum distance from sound reflecting surface to hear an echo is about

Detailed Solution for Test: Sound - 2 - Question 13

The speed of sound in air is about 344 m/s and minimum time-interval between two sounds require is 0.1second to hear two sound. So, 2xdistance = speed x time = 344x0.1= 34.4 m. minimum distance from sound to reflecting surface is 17.2m.

Test: Sound - 2 - Question 14

Speed of sound __________ with increase in temperature

Detailed Solution for Test: Sound - 2 - Question 14

The speed of sound increase with increase in temperature. At higher temperature, the particles of medium have higher energy to vibrate faster.

Test: Sound - 2 - Question 15

The pitch of sound depends on the __________ of the vibrating body.

Test: Sound - 2 - Question 16

One of the most common well-known periodic motion is that of

Detailed Solution for Test: Sound - 2 - Question 16

The motion of object which repeats after fixed interval of sound is called periodic motion. Simple pendulum is most common well-known periodic motion.

Test: Sound - 2 - Question 17

Sound cannot travel through

Detailed Solution for Test: Sound - 2 - Question 17

Sound cannot travel through vacuum as sound require material medium for its propagation. Sound can travel through air, water and solids.

Test: Sound - 2 - Question 18

Range of audible sound is

Detailed Solution for Test: Sound - 2 - Question 18

The range of audible sound is 20Hz to 20,000Hz. The sound above the 20,000Hz is called ultrasound and less than 20Hz is called infrasound.

Test: Sound - 2 - Question 19

The sound of frequency more than 20,000Hz is called

Detailed Solution for Test: Sound - 2 - Question 19

The sound of frequency more than 20,000Hz is called ultrasound. Ultrasound cannot be heard by human.

Test: Sound - 2 - Question 20

Ultrasound is used in

Detailed Solution for Test: Sound - 2 - Question 20

Ultrasound is used in echocardiography to known the functioning of heart. Echocardiography is common known as ECG.

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