Physics
Grade-8
Easy
Question
Vacuum is a medium which has ____ particles.
- A large number of
- A few
- No
- All kinds of
Hint:
A vacuum is a medium that doesn't have any particles.
The correct answer is: No
- A vacuum is a medium with no particles.
- It only allows non mechanical waves like electromagnetic waves to travel through it.
- Sound being a mechanical wave does not travel through it because it need a material medium for propagation.
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