MDCAT Physics Chapter 6 online mcq test with answers for chapter 6 (Electrostatics)

Question # 1

A stationary wave is established in a string which vibrates in four segments at afrequency of 120 Hz. Its fundamental frequency is:

15Hz A
60Hz B
30Hz C
430Hz D

Question # 2

Where in standing wave, do the vibrations of the medium occur?

Only at the nodes A
Only at the antinodes B
At all points between the nodes C
At all points between the antinodes D

Question # 3

When an observer moves towards a stationary source with a speed equal to 1/5 timesof speed of sound, the percentage increase in the frequency of sound is:

20% A
40% B
5% C
10% D

Question # 4

A closed organ pipe and an open organ pipe have their first overtone identical infrequency. Their lengths are in ratio

3:4 A
1:2 B
2:3 C
3:5 D

Question # 5

The spectrum of a star’s light is measured and the wavelength of one of the lines as thesodium’s line is found to be 589 nm. The same line has the wavelength of 497 nm whenobserved in the laboratory. This means the star is

Moving away from the earth A
Moving towards the earth B
Stationary C
Revolving around the planet D

Question # 6

The fundamental frequency in a stretched string is 10 Hz. To double the frequency, the tension in it must be changed to:

T₂ = 2T₁ A
T₂ = 4T₁ B
T₂ = T₁ C
none of these D

Question # 7

The maximum wavelength of a transverse wave that can be set up in a string of length Lis

L A
2L B
V C
4L D

Question # 8

Wavelength of the wave is the distance between the particles of the medium having adifference of:

Zero A
n B
2n C
𝜋2 D

Question # 9

An organ pipe open at both ends and another organ pipe, closed at one end willresonate with each other, if their lengths are in ration of

1:1 A
1:4 B
2:1 C
1:2 D

Question # 10

A 4 m long string fixed at its ends resonate in 4 segments. The wavelength of the waveis:

4m A
0.5m B
2m C
0.25 m D

Question # 11

Which one is the case when the wavelength is actually changed?

When source move relative to observer A
When observer move relative to source B
When observer moves around a stationary source at the center of circle C
When the relative displacement between source and observer is zero D

Question # 12

A closed organ pipe and an open organ pipe have their first overtones of identicalfrequency. Their respective lengths are in the ratio:

1 : 2 A
4 : 3 B
2 : 3 C
3 : 5 D

Question # 13

A whistle is revolved with high speed in a horizontal circle of radius R. to an observer at the centre of the circle the frequency of the whistle will appear to be:

Decreasing A
Increasing B
Both C
Constant D

Question # 14

With the propagation of longitudinal waves through a material medium, the quantitiestransferred in the direction of propagation are:

Energy, momentum and mass A
Energy and momentum B
Energy and mass C
Energy D

Question # 15

A sonar depth finder in a boat uses sound signals to determine the depth of water. Fourseconds after the sound leaves the boat it returns to the boat because of reflection fromthe bottom. Assume the speed of sound in water is 1,460 meters per second. The depth of the water is, in meters, :

2,200 A
4,800 B
4,400 C
2,920 D

Question # 16

A progressive sound wave is a means of transferring energy. A progressive sound waveof constant frequency is generated in air. The intensity of energy transfer is directlyproportional to another of the wave parameters. Which of the following is correct?

Intensity 𝖺 (𝑎𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒)²
A
Intensity 𝖺 (𝑝𝑒𝑟𝑖𝑜𝑑𝑖𝑐 𝑡𝑖𝑚𝑒)²
B
Intensity 𝖺 (𝑠𝑝𝑒𝑒𝑑)²
C
Intensity 𝖺 (𝑤𝑎𝑣𝑒𝑙𝑒𝑛𝑔𝑡ℎ)²
D

Question # 17

When passes from medium to another, deviate from its path is called

reflection A
refraction
B
diffraction C
transmission D

Question # 18

It is a common characteristic of all types of wave motion that

Particles move up and down A
Particles move back and forth B
Energy is transferred without the transport of particles C
A material medium transmits the disturbance D

Question # 19

A church organ consist of open ended pipes ranging from 4m to 4 mm, if the speed ofsound is considered as 400 m/s then the min and max frequency is:

400 Hz and 4 kHz A
100 Hz and 100 kHz B
50 Hz and 50kHz C
400 Hz and 400 kHz D

Question # 20

A listener observes the frequency “f” of stationary source. If it move toward with 3 times of velocity of sound. Then the apparent frequency of the sound will be

f A
3f B
f/2 C
4f D

Sr.#	Question	Answer
1	A closed organ pipe and an open organ pipe have their first overtone identical infrequency. Their lengths are in ratio	A. 3:4 B. 1:2 C. 2:3 D. 3:5
2	The frequency of an open pipe is f. if one end is closed then its fundamental frequencywill be:	A. f/2 B. 3f/4 C. f D. 2f
3	Where in standing wave, do the vibrations of the medium occur?	A. Only at the nodes B. Only at the antinodes C. At all points between the nodes D. At all points between the antinodes
4	A church organ consist of open ended pipes ranging from 4m to 4 mm, if the speed ofsound is considered as 400 m/s then the min and max frequency is:	A. 400 Hz and 4 kHz B. 100 Hz and 100 kHz C. 50 Hz and 50kHz D. 400 Hz and 400 kHz
5	The spectrum of a star’s light is measured and the wavelength of one of the lines as thesodium’s line is found to be 589 nm. The same line has the wavelength of 497 nm whenobserved in the laboratory. This means the star is	A. Moving away from the earth B. Moving towards the earth C. Stationary D. Revolving around the planet
6	It is a common characteristic of all types of wave motion that	A. Particles move up and down B. Particles move back and forth C. Energy is transferred without the transport of particles D. A material medium transmits the disturbance
7	A progressive sound wave is a means of transferring energy. A progressive sound waveof constant frequency is generated in air. The intensity of energy transfer is directlyproportional to another of the wave parameters. Which of the following is correct?	A. Intensity 𝖺 (𝑎𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒)² B. Intensity 𝖺 (𝑝𝑒𝑟𝑖𝑜𝑑𝑖𝑐 𝑡𝑖𝑚𝑒)² C. Intensity 𝖺 (𝑠𝑝𝑒𝑒𝑑)² D. Intensity 𝖺 (𝑤𝑎𝑣𝑒𝑙𝑒𝑛𝑔𝑡ℎ)²
8	In which of the following, Doppler’s effect is not applicable?	A. To find speed of satellite B. To find objects under water C. To find speed of star D. To tune a musical instrument
9	The fundamental frequency of a closed organ pope is 50 Hz. The frequency ofsecond over tone is	A. 100hz B. 150hz C. 60hz D. 250hz
10	An organ pipe open at both ends and another organ pipe, closed at one end willresonate with each other, if their lengths are in ration of	A. 1:1 B. 1:4 C. 2:1 D. 1:2

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MDCAT Physics Chapter 6 MCQ Test With Answer for (Waves )

MCQ's Test For MDCAT Physics Chapter 6 Waves Online Test

MDCAT Physics Chapter 6 Waves Online Test

A stationary wave is established in a string which vibrates in four segments at afrequency of 120 Hz. Its fundamental frequency is:

Where in standing wave, do the vibrations of the medium occur?

When an observer moves towards a stationary source with a speed equal to 1/5 timesof speed of sound, the percentage increase in the frequency of sound is:

A closed organ pipe and an open organ pipe have their first overtone identical infrequency. Their lengths are in ratio

The spectrum of a star’s light is measured and the wavelength of one of the lines as thesodium’s line is found to be 589 nm. The same line has the wavelength of 497 nm whenobserved in the laboratory. This means the star is

The fundamental frequency in a stretched string is 10 Hz. To double the frequency, the tension in it must be changed to:

The maximum wavelength of a transverse wave that can be set up in a string of length Lis

Wavelength of the wave is the distance between the particles of the medium having adifference of:

An organ pipe open at both ends and another organ pipe, closed at one end willresonate with each other, if their lengths are in ration of

A 4 m long string fixed at its ends resonate in 4 segments. The wavelength of the waveis:

Which one is the case when the wavelength is actually changed?

A closed organ pipe and an open organ pipe have their first overtones of identicalfrequency. Their respective lengths are in the ratio:

A whistle is revolved with high speed in a horizontal circle of radius R. to an observer at the centre of the circle the frequency of the whistle will appear to be:

With the propagation of longitudinal waves through a material medium, the quantitiestransferred in the direction of propagation are:

A sonar depth finder in a boat uses sound signals to determine the depth of water. Fourseconds after the sound leaves the boat it returns to the boat because of reflection fromthe bottom. Assume the speed of sound in water is 1,460 meters per second. The depth of the water is, in meters, :

A progressive sound wave is a means of transferring energy. A progressive sound waveof constant frequency is generated in air. The intensity of energy transfer is directlyproportional to another of the wave parameters. Which of the following is correct?

When passes from medium to another, deviate from its path is called

It is a common characteristic of all types of wave motion that

A church organ consist of open ended pipes ranging from 4m to 4 mm, if the speed ofsound is considered as 400 m/s then the min and max frequency is:

A listener observes the frequency “f” of stationary source. If it move toward with 3 times of velocity of sound. Then the apparent frequency of the sound will be

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