Multiple choice

Which of the following statements is wrong?

  1. Light travels faster in vacuum than in air.

  2. The wavelength of light is longer than the wavelength of sound.

  3. Light travels nearly 330 metres in one second.

  4. Speed of sound is mach one.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The wavelength of light is longer than the wavelength of sound.

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