Class X

An electric iron is rated at 1000 W. amount of heat generated in 15 minutes is equal to
  1. 66.67 J
  2. 15 kJ
  3. 900 kJ
  4. None of above
Given that both liquid A and liquid B exert same amount of pressure, what would be height of column of liquid A if density of liquid A is twice density of liquid B and height of column of liquid B is 10 cm?
  1. 5 cm
  2. 10 cm
  3. 20 cm
  4. None of above
Clinical thermometer has l100 23 cm and l0 is 5 cm, if lθ is 14 cm temperature of thermometer would be
  1. 50 °C
  2. 60 °C
  3. 75 °C
  4. 10°C
Steam point is a point on which
  1. Mercury boils
  2. Water boils
  3. Steam condenses
  4. Ice melts
Objects that produce their own light are called
  1. Luminous objects
  2. Non-luminous objects
  3. Transparent objects
  4. Opaque objects
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