Physics
Grade-7
Easy
Question
The particles of a medium vibrate _____ when waves propagate through it.
- About their equilibrium positions
- About their extreme positions
- Both a and b
- None of the above
Hint:
About their equilibrium positions
The correct answer is: About their equilibrium positions
the particles of a medium vibrate about their mean positions whenever a wave travels through that medium.
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A periodic wave is a _________.
A periodic wave is a _________.
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Which of the following statements is/are correct about the 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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In which of the following medium waves can be generated?
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Which of the following is carried by waves from one place to another?
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Mechanical waves cannot travel through:
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A wave:
A wave:
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Energy can be transferred through:
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Continuous vibrations at the source create:
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In which of the following media can non-mechanical waves travel?
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___________ waves can be observed.
___________ waves can be observed.
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