Physics
Grade-8
Easy
Question
Density variations are not caused among the particles of the medium when they vibrate ____ the direction of the wave propagation.
- In
- At 30-degree angle to
- At 90-degree angle to
- At 135-degree angle to
Hint:
Pressure and density variations are seen in a longitudinal wave, where the particles of the medium vibrate parallel to the direction of wave propagation.
The correct answer is: At 90-degree angle to
- Pressure and density changes do not occur in a transverse stationary wave.
- In a transverse wave, particles of the medium vibrate and move in a direction perpendicular to the direction of wave propagation.
- So, the correct option is c.
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