Physics
Grade-9
Easy
Question
In a medium, a mechanical wave travels. With the wave, which of the following quantities is moved from one point to another?
- Mass
- Speed
- Density
- Energy
Hint:
With wave moves energy
The correct answer is: Energy
Mechanical wave is an oscillation of matter and therefore transfers energy through a medium
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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:
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Transverse waves have ________.
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Two simple pendulums of lengths 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed .... oscillations.
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II. Mass suspended by a spring executes SHM.
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The periodic time of a body executing simple harmonic motion is 3 sec. After how many intervals from time t = 0, its displacement will be half of its amplitude:
The periodic time of a body executing simple harmonic motion is 3 sec. After how many intervals from time t = 0, its displacement will be half of its amplitude:
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Choose the correct statement from the following:
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Choose the correct statement from the following:
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Reason: The body oscillates to and from about its mean position.
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