NEET Physics Thermodynamics Questions Solved


A closed hollow insulated cylinder is filled with gas at 0°C and also contains an insulated piston of negligible weight and negligible thickness at the middle point. The gas on one side of the piston is heated to 100°C. If the piston moves 5 cm, the length of the hollow cylinder is -

(1) 13.65 cm

(2) 27.3 cm

(3) 38.6 cm

(4) 64.6 cm

(4) Using Boyle’s law, we have VT= constant

l2+5373=l25273

As the piston moves 5 cm, the length of one side will be l2+5and other side l2-5. On solving this equation, we get l = 64.6 cm.

Difficulty Level:

  • 23%
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  • 33%
  • 23%
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