Physics · Acoustics
The thunder of clouds is heard much later after the flash of lightning is seen. What is the reason for this?
- 1Light can travel through a vacuum whereas sound cannot.
- 2Clouds obstruct sound waves but let light waves pass quickly.
- 3Thunder is actually produced much later than the lightning flash.
- 4The speed of light is much greater than the speed of sound.✓
Correct answer
The speed of light is much greater than the speed of sound.
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