Physics 10 Unit 11 MCQs Tests

In this post, we have prepared 3 MCQs tests of Federal Board Physics 10 Unit 11 MCQs Tests. For more Class 10 Physics MCQs Tests visit this page.

Physics 10 Unit 11 MCQs Tests

Practice MCQs Test No 1

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703

Class 10 Physics

Chapter 11

Practice MCQs Test No 1

1 / 20

The amplitude of 100 dB sound is:

10,000

1000

100,000

1001000

2 / 20

_________ is the characteristic of sound by which we can distinguish between a shrill and a grave sound.

Quality

loudness

Intensity

Pitch

3 / 20

Sound can travel only in presence of

Air

Both Medium and Air

Medium

vacuum

4 / 20

By using a/an __________ we can see sound wave.

Electroscope

Oscilloscope

Stroboscope

Gastroscope

5 / 20

Sound is ___________ Wave

Longitudinal

Transverse

Electromagnetic

None of these

6 / 20

The study of sound is called

Electrostatics

Acoustic

Optics

All of these

7 / 20

Frequency of silent whistle lies between

15,000 Hz - 40,000 Hz

20,000 Hz - 35,000 Hz

20,000 Hz - 25,000 Hz

20 Hz - 20,000 Hz

8 / 20

The intensity of sound depends on the _________ of sound.

Time period

Amplitude

none of these

frequency

9 / 20

Loudness of sound depends on

Amplitude of vibrating body

All of these

Distance of vibrating body

Area of vibrating body

10 / 20

Voice of Child is _____

Shrill

Faint

Grave

Loud

11 / 20

Pitch of sound depends on

Amplitude

Frequency

Time period

Displacement

12 / 20

Characteristic by which we can distinguish between two sounds of same loudness and pitch is called

Loudness

Quality

Intensity of sound

Pitch

13 / 20

Intensity of loudest audible sound is

10⁻¹² Wm⁻²

All of these

1 Wm⁻²

20 Wm⁻²

14 / 20

Intensity is a _____ quantity.

Physical quantity

none of these

Vector

Scalar

15 / 20

The loudness of sound is directly proportional to logarithm of intensity, this law is called ________

Law of Gravitation

Weber Fechner Law

Echo

Intensity Level

16 / 20

Intensity of whispering is ______

10⁻⁸ Wm⁻²

10⁻¹² Wm⁻²

10⁻⁵ Wm⁻²

10⁻⁸ Wm⁻²

17 / 20

1 bell is equal to

10 dB

100 dB

20 dB

50 dB

18 / 20

Sound is produced by

Both of these

Propagation

Vibration

None of these

19 / 20

Intensity of faintest sound is

10⁻⁹ Wm⁻²

10⁻⁸ Wm⁻²

10¹² Wm⁻²

10⁻¹² Wm⁻²

20 / 20

Distance between two consecutive compressions and rarefactions is the _____________ of sound wave.

Wave length

Amplitude

Frequency

none of these

Your score is

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Practice MCQs Test No 2

/20

456

Class 10 Physics

Chapter 11

Practice MCQs Test No 2

1 / 20

Echo of sound is:

Reflection

Diffraction

Refraction

Interference

2 / 20

The speed of sound in solid is _____ than liquid and air.

None of these

Equal

Greater

Smaller

3 / 20

The speed of sound in air was first accurately measured in

1838

1638

1738

1938

4 / 20

The speed of sound in solid is about _____ times that in gases.

15

20

10

5

5 / 20

For a normal person audible frequency range for sound wave lie between

30 Hz and 30 kHz

20 Hz and 20 kHz

10 Hz to 10 kHz

25 Hz and 25 kHz

6 / 20

Bats can hear frequencies up to ______

120,000 Hz

12.00.000 Hz

10.000 Hz

120,00,000 Hz

7 / 20

Rarefactions are places where air is slightly _____________ than the surrounding air.

None of these

Less

Higher

Equal

8 / 20

The level of noise recommended in most of countries is:

95 - 100 dB

75 - 80 dB

115 - 120 dB

85 - 90 dB

9 / 20

Mice can hear frequencies up to:

100,000 Hz

35,00 Hz

45,00 Hz

35,000 Hz

10 / 20

The speed of sound in air at 2 atm pressure and at room temperature (21°C) is

None of these

360 ms⁻¹

320 ms⁻¹

343 ms⁻¹

11 / 20

We hear sound produce by musical instrument such as

All of these

Harmonic

Flute

Violin

12 / 20

Such sounds which are unpleasant to our ears are called:

Noise

Both musical sound and noise

None of these

Musical Sounds

13 / 20

The speed of sound varies with

Humidity

Temperature

both Temperature and Humidity

None of these

14 / 20

For hearing distinct echoes, the minimum distance of obstacle from source of source of sound must be

38 m

17 m

34 m

16 m

15 / 20

_______ corresponds to irregular and sudden vibrations produced by some sound.

Musical Sound

Noise

Notes of tuning fork

None of these

16 / 20

The method used to absorb undesirable sound by soft and porous surface is called:

Acoustics

Intensity

Echos

Pitch

17 / 20

Such sound which are pleasant to our ears are called _____________

Both musical sounds and noise

Musical sounds

None of these

Noise

18 / 20

Multiple reflections are called

Acoustics

Vibration

All of these

Reverberations

19 / 20

The sensation of sound persists in our brain for about

0.01 s

0.1 s

2 s

1 s

20 / 20

Compressions are places where air is slightly ____________ than the surrounding air.

Less

Equal

Higher

None of these

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Practice MCQs Test No 3

/19

386

Class 10 Physics

Chapter 11

Practice MCQs Test No 3

1 / 19

Which bird fly easily between wires in the black room?

Bat

Parrot

Sparrow

Cow

2 / 19

By which waves small cracks can appear:

NOTSE

Sound frequency

Infrasonic

Ultrasonics

3 / 19

When the frequency of a sound wave is increased which of following decreases?

Both Wavelength and Period

Wavelength

Period

Amplitude

4 / 19

Noise corresponds to _____________ vibrations.

Slowly slowly

Irregular

Both Irregular and Sudden

Sudden

5 / 19

______  waves carry more energy and higher frequency than sound waves.

Audible sound

All of these

Ultrasonics

Infrasonic

6 / 19

The range of the frequency which human, ear can hear is called

Ultrasonic waves

none of these

Transonic waves

Audible frequency range

7 / 19

According to wave equation v = fλ the wavelength of ultra sonic waves are:

Very small

Both very small and big

None of these

Very big

8 / 19

Ultrasonics are used to locate under-water depth. This technique is called:

Acoustics

Sonar

Infrasonics

Reverbration

9 / 19

Which are the acoustic protection except

Theater halls

Kitchen

Auditorium

Lecture Halls

10 / 19

Ultrasound is the frequency of sound higher than

20 kHz

25,000 Hz

20 Hz

15,000 Hz

11 / 19

Audible frequency range is

20 Hz - 15600 Hz

200 Hz - 2000 Hz

20 Hz - 20 kHz

15 Hz - 15000 Hz

12 / 19

Sound waves with frequency less than 20Hz are called:

Acoustic

Ultrasonic

Notes

Infrasonics

13 / 19

Noise has negative effects on human health it cause except

Hyper tension

Aggression

Fever / flue

High stress level

14 / 19

Powerful ultrasound is now being used to remove blood clots from:

Convoluted tubule

Capillaries

Arteries

None of these

15 / 19

Infrasonic is the frequency of sound less than

15,000 Hz

20 Hz

20 kHz

25,000 Hz

16 / 19

Ultrasonics are used to measure the depth of water by ______

Diffraction

Echo Method

Acoustics

Sound Level

17 / 19

Old people cannot hear sound even above

20,00 Hz

15,000 Hz

Both 1.5 kHz and 15,000 Hz

1.5 kHz

18 / 19

Bats can hear frequency up to

20,000 Hz

120,000 Hz

2,000 Hz

15,000 Hz

19 / 19

By ultrasonic waves ______ are destroyed.

Bacteria

Germs

Fungus

Both Germs and Bacteria

Your score is

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