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Question 62

An electric bell is placed inside a sealed glass bell jar connected to a vacuum pump. At first, with air inside the jar, the ringing of the bell is clearly heard. The vacuum pump is then turned on to remove all the air from the jar. Changing the situation from having air to a vacuum, what does an observer standing near the jar hear after all the air has been pumped out?

A

a louder sound

B

a quieter sound

C

a sound of the same loudness

D

no sound at all

Markscheme

Sound Questions

  1. IGCSE
  2. /Physics
  3. /Sound

295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.

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