Physics
Grade-7
Easy
Question
Transverse waves have ________.
- Crest
- Trough
- Rarefaction
- Both a and b
Hint:
Both a and b
The correct answer is: Both a and b
transverse waves have both trough and crest but no rarefaction.
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Which one of the following images represents a pulse?
Which one of the following images represents a pulse?
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Energy is carried by _________.
Energy is carried by _________.
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The sound can travel in the air when:
The sound can travel in the air when:
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In which of the following media can a mechanical wave travel?
In which of the following media can a mechanical wave travel?
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In vacuum, mechanical waves cannot propagate because there _________.
In vacuum, mechanical waves cannot propagate because there _________.
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While we throw a ball in the direction of waves, the waves transfer _____ to the ball:
While we throw a ball in the direction of waves, the waves transfer _____ to the ball:
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Why are sound waves considered mechanical waves?
Why are sound waves considered mechanical waves?
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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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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.
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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When waves move on the surface of the water, the water molecules execute:
When waves move on the surface of the water, the water molecules execute:
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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.
II. Mechanical waves transfer only energy from one point to another.
III. Mechanical waves transfer only matter from one point to another.
PhysicsGrade-7
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If you throw a stone in water the wave pattern observed is generally:
If you throw a stone in water the wave pattern observed is generally:
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Which of the following does not require a medium for propagation?
(a) Sound waves
(b) Light waves
(c) Water waves
Which of the following does not require a medium for propagation?
(a) Sound waves
(b) Light waves
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PhysicsGrade-7
