1.

Prepare a note on the working of the maximum-mini-mum thermometer.

Answer»
  • The maximum-minimum thermometer is the instrument for measuring the maximum and minimum temperature in a day.
  • Here the two thermometers are connected using a U – shaped glass tube.
  • The mercury-filled in the maximum thermometer expands with rise in temperature and pushes up the metal indicator.
  • The indicator remains at the position showing the maximum temperature of the day.
  • According to the position of the indicator the maximum temperature can be read at any time during a day.
  • The minimum thermometer has alcohol-filled above the indicator.
  • When the temperature falls the indicator is pushed up as the alcohol contract.
  • The minimum temperature can bread from the position of the indicator at any time.


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