NEET Physics Basic of Mechanical Waves Progressive and Stationary Waves MCQs Set A

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MCQ for Full Syllabus Physics Basic of Mechanical Waves Progressive and Stationary Waves

Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Basic of Mechanical Waves Progressive and Stationary Waves in Full Syllabus.

Basic of Mechanical Waves Progressive and Stationary Waves MCQ Questions Full Syllabus Physics with Answers


Question: Sound waves transfer

a) both energy and momentum

b) only energy not momentum

c) momentum

d) energy

Answer: both energy and momentum

 

Question:

a) B and F

b) C and E

c) F and G

d) B and G

Answer: B and F

 

Question: The reason for introducing Laplace correction in the expression for the velocity of sound in a gaseous medium is

a) no change in the heat of the medium during the propagation of the sound through it

b) change in the pressure of the gas due to the compression and rarefaction

c) change in the volume of the gas

d) no change in the temperature of the medium during the propagation of the sound through it

Answer: no change in the heat of the medium during the propagation of the sound through it

 

Question: Which of the following changes at an antinode in a stationary wave?

a) Neither pressure nor density

b) Both pressure and density

c) Pressure only

d) Density only

Answer: Neither pressure nor density

 

Question:

a)

b)

c)

d)

Answer:

 

Question:

a)

b)

c)

d)

Answer:

 

Question: What is the effect of humidity on sound waves when humidity increases?

a) Speed of sound waves is more

b) Speed of sound waves is less

c) Speed of sound waves remains same

d) Speed of sound waves becomes zero

Answer: Speed of sound waves is more

 

Question:

a) a progressive wave of single frequency along x-axis

b) a simple harmonic motion

c) stationary wave of single frequency along x-axis

d) the resultant of two SHMs of slightly different frequencies

Answer: a progressive wave of single frequency along x-axis

 

Question:

a)

b)

c)

d)

Answer:

 

Question:

a)

b)

c)

d) None of these

Answer:

 

Question:  Which of the following statements is/are correct about the standing wave?
I. In a standing wave the disturbance produce is confined
to the region where it is produced.
II. In a standing wave, all the particles cross their mean position together.
III. In a standing wave, energy is transmitted from one region of space to other.

a) I and II

b) Only III

c) Only II

d) I, II and III

Answer:  I and II

 

Question:

a) 1.0 radian

b) 1.57 radian

c) 1.25 radian

d) 0.57 radian

Answer: 1.0 radian

 

Question:

a)

b)

c)

d) A

Answer:

 

Question: Assertion : Solids can support both longitudinal and transverse waves but only longitudinal waves can propagate in gases.
Reason : For the propagation of transverse waves, medium must also necessarily have the property of rigidity

a) Assertion is correct, reason is correct; reason is a correct explanation for assertion

b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion

c) Assertion is correct, reason is incorrect

d) Assertion is incorrect, reason is correct

Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion

 

 More Questions.................................

 

Question: The bulk modulus of a liquid of density 8000 kg m–3 is 2 × 109 N m–2. The speed of sound in that liquid is (in m s–1)

a) 500

b) 100

c) 250

d) 200

Answer:  500

 

Question: The rate of transfer of energy in a wave depends

a) directly on the square of the wave amplitude and square of the wave frequency

b) directly on the square of the wave amplitude and root of the wave frequency

c) directly on the wave amplitude and square of the wave frequency

d) None of these

Answer: directly on the square of the wave amplitude and square of the wave frequency

 

Question:

a)

b)

c)

d)

Answer:

 

Question: The velocity of sound in hydrogen is 1224 m/s. Its velocity in a mixture of hydrogen and oxygen containing 4 parts by volume of hydrogen and 1 part oxygen is

a) 612 m/s

b) 2448 m/s

c) 306 m/s

d) 1224 m/s

Answer: 612 m/s

 

Question: When a sound wave of frequency 300 Hz passes through a medium, the maximum displacement of a particle of the medium is 0.1 cm. The maximum velocity of the particle is equal to

a)

b)

c)

d)

Answer:

 

Question: The velocity of sound in a container of air at –73ºC is 300 m/s. It temp. of container were raised to 127ºC, what would be the velocity of sound ?

a) 600 m/s

b) 300 m/s

c)

d)

Answer: 600 m/s

 

Question:

a) 660 Hz

b) 330 Hz

c) 165 Hz

d) 150 Hz

Answer: 660 Hz

 

Question: When a wave is reflected from a denser medium, the change in phase is

a) 

b)

c) Both

d) None of these

Answer:

 

Question:

a)

b)

c)

d)

Answer:

 

Question:

a)

b)

c)

d)

Answer:

 

Question:

a) 5 m/s

b) 2000 m/s

c) 20 m/s

d) 10 m/s

Answer: 5 m/s

 

Question:  A progressive sound wave of frequency 500 Hz is travelling through air with a speed of 350 ms–1. A compression maximum appears at a place at a given instant. The minimum time interval after which the rarefraction maximum occurs at the same point, is

a)

b)

c)

d)

Answer:

 

Question: A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of sound in a tissue is 1.7 km/s. The wavelength of sound in tissue is close to

a) 4 × 10–4 m

b) 4 × 10–3 m

c) 8 × 10–4 m

d) 8 × 10–3 m

Answer:  4 × 10–4 m

 

Question:

a) 200 m/s

b) 100 m/s

c) 332 m/s

d) 92 m/s

Answer:  200 m/s

 

Question:

a)

b)

c)

d)

Answer:

 

Question:

a) 6 radian

b) 4 radian

c) 3 radian

d) 2 radian

Answer: 6 radian

 

Question: When a sound wave goes from one medium to another, the quantity that remains unchanged is

a) frequency

b) amplitude

c) wavelength

d) speed

Answer: frequency

 

Question: For which of the following do the longitudinal waves exist?

a) Both

b) Air

c) Water

d) None of these

Answer:  Both

 

Question: Sound travels in rocks in the form of

a) both longitudinal and transverse elastic waves

b) non-elastic waves

c) transverse elastic waves only

d) longitudinal elastic waves only

Answer: both longitudinal and transverse elastic waves

 

Question: From a point source, if amplitude of waves at a distance r is A, its amplitude at a distance 2r will be

a) A/2

b) A/4

c) 2 A

d) A

Answer:  A/2

 

Question: The property of a medium necessary for wave propagation is

a) All of the above

b) elasticity

c) inertia

d) low resistance

Answer:  All of the above

 

Question:

a)

b)

c)

d) it does not represent a wave motion

Answer:

 

Question: When a wave is reflected from a denser medium, the change in phase is

a)

b)

c)

d)

Answer:

 

Question: The ratio of the speed of a body to the speed of sound is called

a) Mach number

b) sonic index

c) Doppler ratio

d) refractive index

Answer: Mach number

 

Question: Of the following, the equation of plane progressive wave is

a)

b)

c)

d)

Answer:

 

Question:

a)

b)

c)

d)

Answer:

 

MCQs for Basic of Mechanical Waves Progressive and Stationary Waves Physics Full Syllabus

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