Physics
Grade-9
Easy
Question
Why are sound waves considered mechanical waves?
- The sound wave is a disturbance that is transported through a medium.
- The particles of sound waves vibrate in a direction perpendicular to the wave’s propagation direction.
- The particles of sound waves always tend to come back to their original positions when set in a wave motion.
- All the above
Hint:
Sound waves require a material medium for propagation
The correct answer is: The sound wave is a disturbance that is transported through a medium.
Sound waves require a medium as they depend on particulate motion
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“Wave motion shifts mass from one region to another” The above statement is:
“Wave motion shifts mass from one region to another” The above statement is:
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The particles of a medium vibrate _____ when waves propagate through it.
The particles of a medium vibrate _____ when waves propagate through it.
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Transverse waves are those ___.
Transverse waves are those ___.
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Which of the following statements is/are correct about waves?
I. Waves are patterns of disturbance that move without the actual physical transfer of flow of matter.
II. Waves cannot transport energy.
III. The pattern of disturbance in the form of waves carries information that propagates from one point to another.
IV. All our communications essentially depend on the transmission of signals through waves.
Which of the following statements is/are correct about waves?
I. Waves are patterns of disturbance that move without the actual physical transfer of flow of matter.
II. Waves cannot transport energy.
III. The pattern of disturbance in the form of waves carries information that propagates from one point to another.
IV. All our communications essentially depend on the transmission of signals through waves.
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Which of the following statements are true?
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Which of the following statements are true?
i) Direction of wave propagation and particle motion are along the same direction for longitudinal waves
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iv) Direction of wave propagation and particle motion are perpendicular to each other for transverse waves
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Consider the following statements and select the incorrect statement(s) from the following.
I. Mechanical waves transfer energy and matter both from one point to another.
II. Mechanical waves transfer only energy from one point to another.
III. Mechanical waves transfer only matter from one point to another.
Consider the following statements and select the incorrect statement(s) from the following.
I. Mechanical waves transfer energy and matter both from one point to another.
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Mechanical waves on the surface of a liquid are:
Mechanical waves on the surface of a liquid are:
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Which of the following does not require a medium for propagation?
(a) Sound waves
(b) Lightwaves
(c) Water waves
Which of the following does not require a medium for propagation?
(a) Sound waves
(b) Lightwaves
(c) Water waves
PhysicsGrade-9
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For which of the following do the longitudinal waves exist?
For which of the following do the longitudinal waves exist?
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Which of the following is carried by waves from one place to another?
Which of the following is carried by waves from one place to another?
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Mechanical Waves cannot travel through:
Mechanical Waves cannot travel through:
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Waves that travel perpendicular to the direction of vibrations are known as:
Waves that travel perpendicular to the direction of vibrations are known as:
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Light waves are
Light waves are
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When a longitudinal wave travels through a medium, the particles of the medium show compression and Rarefaction. What happens when compression takes place in the medium?
When a longitudinal wave travels through a medium, the particles of the medium show compression and Rarefaction. What happens when compression takes place in the medium?
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In which of the following media can non-mechanical waves travel?
In which of the following media can non-mechanical waves travel?
PhysicsGrade-9
