Physics-
General
Easy

Question

A cylindrical tube of cross-sectional area A has two air tight frictionless pistons at its two ends. The pistons are tied with a straight two ends. The pistons are tied with a straight piece of metallic wire. The tube contains a gas at atmospheric pressure P0 and temperature T0 If temperature of the gas is doubled then the tension in the wire is

  1. 4 P0A    
  2. P0A/2    
  3. P0A    
  4. 2P0A    

The correct answer is: P0A

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