Class X

 Process in which thermal energy is transferred without any flow of medium is termed as
  1. Conduction
  2. Convection
  3. Radiation
  4. Conduction and radiation both
If resistance of a metal wire at ice point is 500 Ω and 510 Ω at steam point, and resistance of wire is 502 Ω room temperature would be
  1. 10 °C
  2. 20 °C
  3. 30 °C
  4. 40 °C
 Kinetic energy is
  1. Directly proportional to temperature
  2. Inversely proportional to temperature
  3. Directly proportional to friction
  4. Inversely proportional to heat
Moment of force is equal to
  1. F/d, where F is force and d is distance
  2. F + d, where F is force and d is distance
  3. F*d, where F is force and d is distance
  4. F - d, where F is force and d is distance
Boiling point of mercury is 630 K, which is equal to
  1. 357 °C
  2. −357 °C
  3. 84 °C
  4. −84 °C
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