According to $Newton's$ $Law$ $of$ $cooling$,the rate of cooling of a body is proportional to the

  • A
    Temperature of the body
  • B
    Temperature of the surrounding
  • C
    Fourth power of the temperature of the body
  • D
    Difference of the temperature of the body and the surroundings

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Newton's law of cooling is used in the laboratory for the determination of the ...........

Discuss the experiment verifying Newton's law of cooling.

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Hot water cools from $80^{\circ} C$ to $60^{\circ} C$ in $1$ minute. How long will it take to cool from $60^{\circ} C$ to $50^{\circ} C$ (in $s$)? (Room temperature $= 30^{\circ} C$)

$A$ block of metal is heated to a temperature much higher than the room temperature and allowed to cool in a room free from air currents. Which of the following curves correctly represents the rate of cooling?

If a liquid takes $30 \; s$ in cooling from $80^{\circ} C$ to $70^{\circ} C$ and $70 \; s$ in cooling from $60^{\circ} C$ to $50^{\circ} C$,then find the room temperature. (in $^{\circ} C$)

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