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प्रश्न
Explain the following:
Water is heated generally from below.
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उत्तर १
Water is heated generally from below because water itself is a bad conductor of heat and the transfer of heat through convection take place vertically upwards
उत्तर २
Water is heated from below because water is heated by process of convection and in process of convection heat always flows in upward direction from downward direction.
संबंधित प्रश्न
Write down the body temperature of a healthy person.
State the types of thermal expansion. What is the relation between α and γ?
Convert the following temperature into Fahrenheit scale:
850C.
Analogy
Ice cube : 0o C :: Boiling water :______
Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.
Reason: Boiling point of water is 10°C.
The temperature of boiling water is ______.
Mention the three units which are used to measure the temperature.
Figure (a–d) shows the readings on four different thermometers. Indicate which of the reading shows the normal human body temperature?
Give reasons why –
an igloo is built as a winter shelter
