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

Question # 1

The fundamental frequency of a closed organ pope is 50 Hz. The frequency ofsecond over tone is

100hz A
150hz B
60hz C
250hz D

Question # 2

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

Question # 3

In which of the following, Doppler’s effect is not applicable?

To find speed of satellite A
To find objects under water B
To find speed of star C
To tune a musical instrument D

Question # 4

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 # 5

The frequency of an open pipe is f. if one end is closed then its fundamental frequencywill be:

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

Question # 6

In closed end organ pipe, the frequency of first harmonic is 300 Hz. The frequency ofthird overtone is :

900 Hz A
1500 Hz B
2100 Hz C
600 Hz D

Question # 7

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 # 8

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 # 9

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 # 10

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 # 11

If a transverse wave has a speed of 10 m/ sec and frequency of 10 cycle/ sec itswavelength is:

1 m A
10^-2 cm B
10 m C
10 cm D

Question # 12

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 # 13

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 # 14

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 # 15

In a closed organ pipe, the fundamental frequency is f. What will be the ratio of thefrequencies of the next three overtones?

2 : 3 : 4 A
3 : 7 : 11 B
3 : 4 : 5 C
3 : 5 : 7 D

Question # 16

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 # 17

The wavelength of light observed on the earth, form a moving star is found todecrease by 0.05%. Relative to the earth the star is

moving away with a velocity of 1.5 x 10⁵m/s A
moving away with a velocity of 1.5 x 10⁴m/s B
coming closer with a velocity of 1.5 x 10⁵m/s C
coming closer with a velocity of 1.5 x 10⁴m/s
D

Question # 18

Bats navigate and find food by:

Ultrasonic A
Echolocation B
Refraction C

Question # 19

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

reflection A
refraction
B
diffraction C
transmission D

Question # 20

When temperature increases, frequency of organ pipe:

Decreases A
Remains the same B
Increases C
Becomes zero D

Sr.#	Question	Answer
1	Wavelength of the wave is the distance between the particles of the medium having adifference of:	A. Zero B. n C. 2n D. 𝜋2
2	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:	A. Decreasing B. Increasing C. Both D. Constant
3	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
4	Which one is the case when the wavelength is actually changed?	A. When source move relative to observer B. When observer move relative to source C. When observer moves around a stationary source at the center of circle D. When the relative displacement between source and observer is zero
5	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
6	With the propagation of longitudinal waves through a material medium, the quantitiestransferred in the direction of propagation are:	A. Energy, momentum and mass B. Energy and momentum C. Energy and mass D. Energy
7	A sonometer wire 100 cm in length has a fundamental frequency of 330 Hz. Thevelocity of propagation of waves along the wire is	A. 115m/sec B. 115m/sec C. 660m/sec D. 990m/sec
8	A stationary wave is established in a string which vibrates in four segments at afrequency of 120 Hz. Its fundamental frequency is:	A. 15Hz B. 60Hz C. 30Hz D. 430Hz
9	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. 2,200 B. 4,800 C. 4,400 D. 2,920
10	The frequency of the fundamental mode of open at one organ pipe is 400 Hz. Ifone end of pipe is closed the fundamental frequency will be	A. 800 Hz B. 600 Hz C. 400 Hz D. 200 Hz

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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

The fundamental frequency of a closed organ pope is 50 Hz. The frequency ofsecond over tone 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

In which of the following, Doppler’s effect is not applicable?

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

The frequency of an open pipe is f. if one end is closed then its fundamental frequencywill be:

In closed end organ pipe, the frequency of first harmonic is 300 Hz. The frequency ofthird overtone is :

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:

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

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

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?

If a transverse wave has a speed of 10 m/ sec and frequency of 10 cycle/ sec itswavelength is:

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:

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

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

In a closed organ pipe, the fundamental frequency is f. What will be the ratio of thefrequencies of the next three overtones?

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, :

The wavelength of light observed on the earth, form a moving star is found todecrease by 0.05%. Relative to the earth the star is

Bats navigate and find food by:

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

When temperature increases, frequency of organ pipe:

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