Class X

As volume is inversely proportional to pressure, we can conclude that
  1. p1V2 = p2V1
  2. p2/V2 = p1V1
  3. p1V1 = p2V2
  4. p1V1 = p2/V2
Melting point of tin is
  1. 32 °C
  2. 132 °C
  3. 232 °C
  4. 332 °C
A clinical thermometer is unmarked and has l100 at 65 cm and l0 at 15 cm, if lθ is 25 cm temperature of thermometer would be
  1. 40 °C
  2. 20 °C
  3. 10 °C
  4. 30 °C
If we place a piece of copper and a piece of iron, will they thermal energy be transferred in both at a same rate?
  1. Yes
  2. No
  3. Copper will heat up first
  4. Iron will heat up first
 In a typical hydraulic press, a force of 20 N is exerted on small piston of area 0.050 m². force exerted by large piston on load if it has an area of 0.50 m² will be
  1. 200 N
  2. 100 N
  3. 50 N
  4. 10 N
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