Chapter 8 Waves Physics 11th Class Punjab MCQ Tests
11th Class Physics Chapter 8 MCQ Tests
Chapter 8 of 11th Class Physics has 44 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 44
Total Marks: 44
Time: 45 Mins
Total Questions: 44
Total Marks: 44
Time: 45 Mins
45Min : 00 Sec Remaining
Question # 1
A stretched string of length 0.6 m is plucked from middle. What will be the wavelength of the wave generated in the string?
Question # 2
During the formation of stationary waves, which of the following statements is true about the waves at T/2 ?
Question # 3
Speed of sound in air at 0° C is 332 m s − 1 . What will be the speed of sound at 20° C ?
Question # 4
What will be the pattern of stationary wave at the end of an organ pipe, which is open at both ends?
Question # 5
What's distance between a node and the next node on a stationary wave?
Question # 6
A stretched string is plucked from quarter of its length and it starts vibrating. How much loops will be generated in the string?
Question # 7
Calculate the speed of sound in air, at 0 o C temperature and 1.01 × 10 5 P a pressure. Density of air is 1.29 k g m − 3 and value of γ for air is 1.41.
Question # 8
Calculate the speed of wave in a stretched string of length 1 m and mass 0.001 kg. The tension in the string is 4 N.
Question # 9
What is the formula for fundamental frequency of a longitudinal stationary wave in an organ pipe, which is open at both ends?
Question # 10
How an airplane detects the exact position of a runway, while landing on a rainy night?
Question # 11
What will be the wavelength of a sound of frequency 600 Hz? The speed of ultrasound is 340 ms−1.
Question # 12
A rope of length l is attached to a mass which is hanging vertically with a spring. When the mass oscillates, a transverse periodic wave travels in the rope. If the time period of oscillations of mass is T , then what will be the time period of wave produced in string?
Question # 13
Calculate the frequency of standing wave in a stretched string of length 1 m if the velocity of wave is 70 ms−1 in the string.
Question # 14
How will you detect resonance in an air column in a resonance tube?
Question # 15
What is distance between a node and the next anti-node on a stationary wave?
Question # 16
Doppler effect cannot be used to measure which of the following quantities?
Question # 17
Sound waves travelling in air strike a wall and are reflected back. What will be the reflection pattern if a compression is incident on the wall?
Question # 18
What is the harmonic series of stationary waves in air column in an organ pipe, which is closed at one end?
Question # 19
What is the distance of the nodes from equilibrium position on a stationary wave?
Question # 20
What is the distance of the antinodes from equilibrium position on a stationary wave?
Question # 21
The speed of mechanical wave in a material depends on which of the following factors?
Question # 22
What will be the shift in wavelength of light emitted by a star moving away from Earth?
Question # 23
The speed of sound in a chamber containing oxygen, at standard temperature and pressure, is → v . what will be the speed of sound in the same chamber if it is filled by hydrogen of same volume at standard temperature and pressure?
Question # 24
Ultrasonics are used for the detection of diseases in which of the following parts of a human body?
Question # 25
A gas is heated at constant pressure. The temperature of the gas increases. What will be the effect of heating on density of the gas?
Question # 26
A wave travelling in one medium is incident on the other medium and is reflected back completely such that there is no loss of energy. Which of the given properties are common in incident and reflected waves?
Question # 27
What will be the wavelength of an ultrasound of frequency 600 kHz? The speed of ultrasound is 340 ms−1.
Question # 28
Which of the given gas laws was used by Laplace in order to calculate the correct value of speed of sound in air?
Question # 29
Which of the following options shows the use of ultrasound?
Question # 30
Speed of sound in air at 0° C is 332 m s − 1 . What will be the speed of sound at − 10°C?
Question # 31
Length l is attached to a mass which is hanging vertically with a spring. When the mass oscillates, a transverse periodic wave travels in the rope. If the time period of oscillations of mass is T , then what will be the time period of wave produced in string?
Question # 32
What was the reason given by Laplace in order to make a correction in Newton's formula for speed of sound in air?
Question # 33
How should a source and an observer move, so that there will be no change in frequency of sound waves emitted by the source?
Question # 34
The frequency of a transverse periodic wave is 200 Hz and its wavelength is 1.5 cm. Calculate its speed.
Question # 35
A medical machine is emitting a sound, but it is not heard by the operator due to high frequency. Which of the following is true regarding the frequency of that sound?
Question # 36
Calculate the speed of sound in air, at 0 o C temperature and 1.01 × 10 5 P a pressure. Density of air is 1.29 k g m − 3 .
Question # 37
What will be the frequency of wave if seven loops are generated in a stretched string? The first frequency is 60 Hz.
Question # 38
A wave travelling in a denser medium strikes the boundary of a rarer medium. What will be the difference in phases of reflected and incident wave?
Question # 39
A 2 cm organ pipe is closed at one end. What will be the first wavelength of stationary wave in an air column in pipe?
Question # 40
What will be the distance between the center of a compressional region and the center of a consecutive rarefactional region in a periodic longitudinal wave?
Question # 41
The time period of a periodic longitudinal wave is 0.002 s and distance between two consecutive rarefactions is 3 cm. Calculate the speed of the wave.
Question # 42
A wave travelling in rarer medium strikes the boundary of a denser medium. What will be the difference in phases of reflected and incident waves?
Question # 43
Speed of sound in dry air is → v. what will be the approximate speed of sound in humid air if the temperature and pressure are not changed?
Question # 44
A source of sound moving with speed 25 m s − 1 towards an observer at rest emits a sound of frequency 500 Hz. Calculate the frequency of sound heard by the observer. Speed of sound is 340 m s − 1 .
Total Questions
1234567891011121314151617181920212223242526272829303132333435363738394041424344
Question # 1
A stretched string of length 0.6 m is plucked from middle. What will be the wavelength of the wave generated in the string?
Question # 2
During the formation of stationary waves, which of the following statements is true about the waves at T/2 ?
Question # 3
Speed of sound in air at 0° C is 332 m s − 1 . What will be the speed of sound at 20° C ?
Question # 4
What will be the pattern of stationary wave at the end of an organ pipe, which is open at both ends?
Question # 5
What's distance between a node and the next node on a stationary wave?
Question # 6
A stretched string is plucked from quarter of its length and it starts vibrating. How much loops will be generated in the string?
Question # 7
Calculate the speed of sound in air, at 0 o C temperature and 1.01 × 10 5 P a pressure. Density of air is 1.29 k g m − 3 and value of γ for air is 1.41.
Question # 8
Calculate the speed of wave in a stretched string of length 1 m and mass 0.001 kg. The tension in the string is 4 N.
Question # 9
What is the formula for fundamental frequency of a longitudinal stationary wave in an organ pipe, which is open at both ends?
Question # 10
How an airplane detects the exact position of a runway, while landing on a rainy night?
Question # 11
What will be the wavelength of a sound of frequency 600 Hz? The speed of ultrasound is 340 ms−1.
Question # 12
A rope of length l is attached to a mass which is hanging vertically with a spring. When the mass oscillates, a transverse periodic wave travels in the rope. If the time period of oscillations of mass is T , then what will be the time period of wave produced in string?
Question # 13
Calculate the frequency of standing wave in a stretched string of length 1 m if the velocity of wave is 70 ms−1 in the string.
Question # 14
How will you detect resonance in an air column in a resonance tube?
Question # 15
What is distance between a node and the next anti-node on a stationary wave?
Question # 16
Doppler effect cannot be used to measure which of the following quantities?
Question # 17
Sound waves travelling in air strike a wall and are reflected back. What will be the reflection pattern if a compression is incident on the wall?
Question # 18
What is the harmonic series of stationary waves in air column in an organ pipe, which is closed at one end?
Question # 19
What is the distance of the nodes from equilibrium position on a stationary wave?
Question # 20
What is the distance of the antinodes from equilibrium position on a stationary wave?
Question # 21
The speed of mechanical wave in a material depends on which of the following factors?
Question # 22
What will be the shift in wavelength of light emitted by a star moving away from Earth?
Question # 23
The speed of sound in a chamber containing oxygen, at standard temperature and pressure, is → v . what will be the speed of sound in the same chamber if it is filled by hydrogen of same volume at standard temperature and pressure?
Question # 24
Ultrasonics are used for the detection of diseases in which of the following parts of a human body?
Question # 25
A gas is heated at constant pressure. The temperature of the gas increases. What will be the effect of heating on density of the gas?
Question # 26
A wave travelling in one medium is incident on the other medium and is reflected back completely such that there is no loss of energy. Which of the given properties are common in incident and reflected waves?
Question # 27
What will be the wavelength of an ultrasound of frequency 600 kHz? The speed of ultrasound is 340 ms−1.
Question # 28
Which of the given gas laws was used by Laplace in order to calculate the correct value of speed of sound in air?
Question # 29
Which of the following options shows the use of ultrasound?
Question # 30
Speed of sound in air at 0° C is 332 m s − 1 . What will be the speed of sound at − 10°C?
Question # 31
Length l is attached to a mass which is hanging vertically with a spring. When the mass oscillates, a transverse periodic wave travels in the rope. If the time period of oscillations of mass is T , then what will be the time period of wave produced in string?
Question # 32
What was the reason given by Laplace in order to make a correction in Newton's formula for speed of sound in air?
Question # 33
How should a source and an observer move, so that there will be no change in frequency of sound waves emitted by the source?
Question # 34
The frequency of a transverse periodic wave is 200 Hz and its wavelength is 1.5 cm. Calculate its speed.
Question # 35
A medical machine is emitting a sound, but it is not heard by the operator due to high frequency. Which of the following is true regarding the frequency of that sound?
Question # 36
Calculate the speed of sound in air, at 0 o C temperature and 1.01 × 10 5 P a pressure. Density of air is 1.29 k g m − 3 .
Question # 37
What will be the frequency of wave if seven loops are generated in a stretched string? The first frequency is 60 Hz.
Question # 38
A wave travelling in a denser medium strikes the boundary of a rarer medium. What will be the difference in phases of reflected and incident wave?
Question # 39
A 2 cm organ pipe is closed at one end. What will be the first wavelength of stationary wave in an air column in pipe?
Question # 40
What will be the distance between the center of a compressional region and the center of a consecutive rarefactional region in a periodic longitudinal wave?
Question # 41
The time period of a periodic longitudinal wave is 0.002 s and distance between two consecutive rarefactions is 3 cm. Calculate the speed of the wave.
Question # 42
A wave travelling in rarer medium strikes the boundary of a denser medium. What will be the difference in phases of reflected and incident waves?
Question # 43
Speed of sound in dry air is → v. what will be the approximate speed of sound in humid air if the temperature and pressure are not changed?
Question # 44
A source of sound moving with speed 25 m s − 1 towards an observer at rest emits a sound of frequency 500 Hz. Calculate the frequency of sound heard by the observer. Speed of sound is 340 m s − 1 .
Total Questions
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Physics MCQ Test by Topics
- +8.1 Progressive Waves
- +8.1 Transverse and Longitudinal Waves
- +8.2 Periodic Waves
- +8.2 Transverse Periodic Waves
- +8.2 Phase Relationship Between two Point on a Wave
- +8.2 Longitudinal Periodic Waves
- +8.3 Speed of Sound in Air
- +8.3 Effect of Variation of Pressure . Density and Temperature on Speed of sound in a Gas
- +8.4 Principle of Superposition
- +8.5 Interference
- +8.6 Beats
- +8.7 Reflection of Waves
- +8.8 Stationary Waves
- +8.9 Stationary Waves in a Stretched String
- +8.10 Stationary Waves in Air Columns
- +8.11 Doppler Effect
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Updated on: 14-10-2026
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