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

/20

295

Class 10 Physics

Chapter 11

Practice MCQs Test No 1

1 / 20

1 bell is equal to

10 dB

100 dB

50 dB

20 dB

2 / 20

Intensity of whispering is ______

10⁻⁸ Wm⁻²

10⁻⁵ Wm⁻²

10⁻¹² Wm⁻²

10⁻⁸ Wm⁻²

3 / 20

Sound is ___________ Wave

Transverse

None of these

Longitudinal

Electromagnetic

4 / 20

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

Wave length

Frequency

none of these

Amplitude

5 / 20

Loudness of sound depends on

Area of vibrating body

Distance of vibrating body

All of these

Amplitude of vibrating body

6 / 20

Intensity is a _____ quantity.

Scalar

Physical quantity

Vector

none of these

7 / 20

Intensity of faintest sound is

10¹² Wm⁻²

10⁻¹² Wm⁻²

10⁻⁸ Wm⁻²

10⁻⁹ Wm⁻²

8 / 20

Intensity of loudest audible sound is

10⁻¹² Wm⁻²

1 Wm⁻²

20 Wm⁻²

All of these

9 / 20

Frequency of silent whistle lies between

20 Hz - 20,000 Hz

15,000 Hz - 40,000 Hz

20,000 Hz - 25,000 Hz

20,000 Hz - 35,000 Hz

10 / 20

Voice of Child is _____

Loud

Faint

Shrill

Grave

11 / 20

Sound is produced by

Both of these

Propagation

None of these

Vibration

12 / 20

Sound can travel only in presence of

Medium

Both Medium and Air

Air

vacuum

13 / 20

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

Law of Gravitation

Intensity Level

Echo

Weber Fechner Law

14 / 20

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

Quality

Intensity of sound

Pitch

Loudness

15 / 20

The amplitude of 100 dB sound is:

10,000

1000

1001000

100,000

16 / 20

The intensity of sound depends on the _________ of sound.

Amplitude

Time period

none of these

frequency

17 / 20

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

Pitch

loudness

Intensity

Quality

18 / 20

The study of sound is called

Electrostatics

All of these

Optics

Acoustic

19 / 20

Pitch of sound depends on

Frequency

Displacement

Time period

Amplitude

20 / 20

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

Gastroscope

Stroboscope

Oscilloscope

Electroscope

Your score is

LinkedIn Facebook VKontakte

Restart quiz

Please rate this quiz and give your feedback.

Send feedback

By Wordpress Quiz plugin

Practice MCQs Test No 2

/20

192

Class 10 Physics

Chapter 11

Practice MCQs Test No 2

1 / 20

Mice can hear frequencies up to:

100,000 Hz

35,000 Hz

45,00 Hz

35,00 Hz

2 / 20

Bats can hear frequencies up to ______

120,000 Hz

120,00,000 Hz

12.00.000 Hz

10.000 Hz

3 / 20

The sensation of sound persists in our brain for about

0.1 s

1 s

0.01 s

2 s

4 / 20

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

Equal

None of these

Less

Higher

5 / 20

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

None of these

360 ms⁻¹

343 ms⁻¹

320 ms⁻¹

6 / 20

We hear sound produce by musical instrument such as

All of these

Harmonic

Flute

Violin

7 / 20

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

Higher

Less

None of these

Equal

8 / 20

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

5

10

15

20

9 / 20

The level of noise recommended in most of countries is:

95 - 100 dB

75 - 80 dB

85 - 90 dB

115 - 120 dB

10 / 20

Multiple reflections are called

Acoustics

All of these

Vibration

Reverberations

11 / 20

Such sounds which are unpleasant to our ears are called:

None of these

Noise

Musical Sounds

Both musical sound and noise

12 / 20

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

Equal

None of these

Greater

Smaller

13 / 20

The speed of sound varies with

both Temperature and Humidity

Humidity

Temperature

None of these

14 / 20

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

16 m

17 m

38 m

34 m

15 / 20

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

30 Hz and 30 kHz

25 Hz and 25 kHz

10 Hz to 10 kHz

20 Hz and 20 kHz

16 / 20

Echo of sound is:

Diffraction

Refraction

Interference

Reflection

17 / 20

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

Noise

None of these

Notes of tuning fork

Musical Sound

18 / 20

The speed of sound in air was first accurately measured in

1738

1638

1838

1938

19 / 20

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

Intensity

Pitch

Echos

Acoustics

20 / 20

Such sound which are pleasant to our ears are called _____________

None of these

Musical sounds

Both musical sounds and noise

Noise

Your score is

LinkedIn Facebook VKontakte

Restart quiz

Please rate this quiz and give your feedback.

Send feedback

By Wordpress Quiz plugin

Practice MCQs Test No 3

/19

160

Class 10 Physics

Chapter 11

Practice MCQs Test No 3

1 / 19

Audible frequency range is

20 Hz - 20 kHz

15 Hz - 15000 Hz

20 Hz - 15600 Hz

200 Hz - 2000 Hz

2 / 19

Noise corresponds to _____________ vibrations.

Slowly slowly

Irregular

Sudden

Both Irregular and Sudden

3 / 19

Old people cannot hear sound even above

Both 1.5 kHz and 15,000 Hz

1.5 kHz

20,00 Hz

15,000 Hz

4 / 19

Ultrasound is the frequency of sound higher than

20 kHz

25,000 Hz

20 Hz

15,000 Hz

5 / 19

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

none of these

Audible frequency range

Ultrasonic waves

Transonic waves

6 / 19

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

Very small

None of these

Very big

Both very small and big

7 / 19

Which are the acoustic protection except

Kitchen

Auditorium

Theater halls

Lecture Halls

8 / 19

Noise has negative effects on human health it cause except

Fever / flue

Hyper tension

Aggression

High stress level

9 / 19

Bats can hear frequency up to

20,000 Hz

2,000 Hz

120,000 Hz

15,000 Hz

10 / 19

Ultrasonics are used to measure the depth of water by ______

Diffraction

Sound Level

Acoustics

Echo Method

11 / 19

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

Period

Amplitude

Both Wavelength and Period

Wavelength

12 / 19

By ultrasonic waves ______ are destroyed.

Both Germs and Bacteria

Bacteria

Fungus

Germs

13 / 19

Which bird fly easily between wires in the black room?

Cow

Parrot

Sparrow

Bat

14 / 19

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

Arteries

Capillaries

None of these

Convoluted tubule

15 / 19

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

Infrasonics

Reverbration

Acoustics

Sonar

16 / 19

Infrasonic is the frequency of sound less than

25,000 Hz

15,000 Hz

20 Hz

20 kHz

17 / 19

Sound waves with frequency less than 20Hz are called:

Acoustic

Infrasonics

Notes

Ultrasonic

18 / 19

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

All of these

Ultrasonics

Audible sound

Infrasonic

19 / 19

By which waves small cracks can appear:

Ultrasonics

NOTSE

Sound frequency

Infrasonic

Your score is

LinkedIn Facebook VKontakte

Restart quiz

Please rate this quiz and give your feedback.

Send feedback

By Wordpress Quiz plugin