Class X

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
 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
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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