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COMEDK2017PhysicsWaves and Sound

The ratio of velocity of sound in hydrogen and oxygen at STP is

Options

  1. A16: 1
  2. B8: 1
  3. C4: 1
  4. D2: 1

Correct answer

C. 4: 1

Step-by-step solution

The velocity of sound in a gas is given by v= R T M At STP, both gases are at same temperature and as they are diatomic, so their specific heat ratio ( ) is also same. v_ H v_ O = M_ O M_ H = 32 2 =4 or 4: 1

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