Physics
Grade-7
Easy
Question
Repeated periodic disturbances create:
- A wave
- A periodic wave
- Ripples
- Both a and c
Hint:
A periodic wave
The correct answer is: A periodic wave
A periodic wave is one that repeats as a function of both time and position and can be described by its amplitude, frequency, wavelength, speed, and energy.
A periodic wave is an energy-carrying periodic disturbance that spreads out from a source. Mechanical and electromagnetic waves are the two forms of waves. Mechanical. Sound waves, water waves, and so forth are examples. Transfer requires a medium; cannot be conveyed through a vacuum.
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