science
Grade-4-
Easy
Question
We cannot see:
- Light waves
- Waves on a rope
- Waves on a slinky
- Waves on the water surface
Hint:
We can't see the waves of things we can't see.
The correct answer is: Light waves
- We can see waves on a rope, on a slinky or on the water surface.
- We can not see light waves. However we can see objects illuminated by it.
- So, the correct option is a.
- Waves on the water surface-
- Waves on a rope and on a slinky-
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