Online Test physics 02

1.Heat and smoke in a kitchen are transferred through the chimney by





2.Decibel is a unity to describe





3.A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?





4.Drinks kept in a vacuum flask remain hot or cold as the case may be for a long time because





5.A bolometer is used to measure





6.Hot tea will cool most easily in a 





7.Air is blown rapidly through some either at the room temperature. Then





8.Body A is kept in contact with body B Heat will flow from A to B if





9.The cover of a solar cooker is made of glass because





10.The inside of a solar cooker is painted dull black, The inside of a solar cooker is painted dull black,







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