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प्रश्न
A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.
विकल्प
solar cell
solar cooker
thermometer
thermos flask
उत्तर
A device in which the loss of heat due to conduction, convection and radiation is minimized is thermos flask.
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संबंधित प्रश्न
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
Fill in the blank and rewrite the sentence.
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