Physics
Grade-9
Easy
Question
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.
- Only IV
- I, III, and IV
- I, II, and III
- I and III
Hint:
Waves do not transfer matter
The correct answer is: I, III, and IV
Waves are essential for communication and transmission. Without waves its impossible for us to feel light or hear sound
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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
ii) Direction of wave propagation and particle motion are along the same direction for Transverse waves
iii) Direction of wave propagation and particle motion are perpendicular to each other for longitudinal waves
iv) Direction of wave propagation and particle motion are perpendicular to each other for transverse waves
Which of the following statements are true?
i) Direction of wave propagation and particle motion are along the same direction for longitudinal waves
ii) Direction of wave propagation and particle motion are along the same direction for Transverse 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.
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I. Mechanical waves transfer energy and matter both from one point to another.
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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
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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?
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Longitudinal waves are those ___.
Longitudinal waves are those ___.
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In a medium, a mechanical wave travels. With the wave, which of the following quantities is moved from one point to another?
In a medium, a mechanical wave travels. With the wave, which of the following quantities is moved from one point to another?
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A longitudinal wave is produced by the vibration of an object. It travels through a medium such as air by forming alternate regions of compression and Rarefaction of air molecules. As a longitudinal wave travels through air, the regions of compression and Rarefaction in it can be shown as:
A longitudinal wave is produced by the vibration of an object. It travels through a medium such as air by forming alternate regions of compression and Rarefaction of air molecules. As a longitudinal wave travels through air, the regions of compression and Rarefaction in it can be shown as:
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A pulse is a wave:
A pulse is a wave:
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