Newton’s Law of Cooling
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PHXI11:THERMAL PROPERTIES OF MATTER

366661 The rate of cooling at \(600\;K\), if surrounding temperature is \(300\;K\) is \(H\). The rate of cooling at \(900\;K\) is:

1 \(\frac{{16}}{3}H\)
2 \(2\,H\)
3 \(3\,H\)
4 \(\frac{{2}}{3}H\)
PHXI11:THERMAL PROPERTIES OF MATTER

366662 When a calorimeter contains \(40\;g\) of water at \(50^\circ C\), then the temperature falls to \(45^\circ C\) in 10 minutes. The same calorimeter contains \(100\;g\)of water at \(50^\circ C\), it takes 20 minutes for the temperature to become \(45^\circ C\). Find the water equivalent of the calorimeter.

1 \(5\;g\)
2 \(20\;g\)
3 \(10\;g\)
4 \(30\;g\)
PHXI11:THERMAL PROPERTIES OF MATTER

366663 A bucket full of hot water cools from \(75^\circ C\) to \(70^\circ C\) in time \(T_{1}\), from \(70^\circ C\) to \(65^\circ C\) in time \(T_{2}\) and from \(65^\circ C\) to \(60^\circ C\) in time \(T_{3}\), then

1 \(T_{1}>T_{2}>T_{3}\)
2 \(T_{1}=T_{2}=T_{3}\)
3 \(T_{1}>T_{2} < T_{3}\)
4 \(T_{1} < T_{2} < T_{3}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366664 A hot body is allowed to cool. The surrounding temperature is constant at \(30^\circ C\). The body takes time \({t_1}\) to cool from \(90^\circ C\) to\(89^\circ C\) and time \({t_2}\) to cool from \(60^\circ C\) to \(59.5^\circ C\). Then,

1 \(t_{2}=2 t_{1}\)
2 \(t_{2}=t_{1} / t_{2}\)
3 \(t_{2}=4 t_{1}\)
4 \(t_{2}=t_{1}\)
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PHXI11:THERMAL PROPERTIES OF MATTER

366661 The rate of cooling at \(600\;K\), if surrounding temperature is \(300\;K\) is \(H\). The rate of cooling at \(900\;K\) is:

1 \(\frac{{16}}{3}H\)
2 \(2\,H\)
3 \(3\,H\)
4 \(\frac{{2}}{3}H\)
PHXI11:THERMAL PROPERTIES OF MATTER

366662 When a calorimeter contains \(40\;g\) of water at \(50^\circ C\), then the temperature falls to \(45^\circ C\) in 10 minutes. The same calorimeter contains \(100\;g\)of water at \(50^\circ C\), it takes 20 minutes for the temperature to become \(45^\circ C\). Find the water equivalent of the calorimeter.

1 \(5\;g\)
2 \(20\;g\)
3 \(10\;g\)
4 \(30\;g\)
PHXI11:THERMAL PROPERTIES OF MATTER

366663 A bucket full of hot water cools from \(75^\circ C\) to \(70^\circ C\) in time \(T_{1}\), from \(70^\circ C\) to \(65^\circ C\) in time \(T_{2}\) and from \(65^\circ C\) to \(60^\circ C\) in time \(T_{3}\), then

1 \(T_{1}>T_{2}>T_{3}\)
2 \(T_{1}=T_{2}=T_{3}\)
3 \(T_{1}>T_{2} < T_{3}\)
4 \(T_{1} < T_{2} < T_{3}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366664 A hot body is allowed to cool. The surrounding temperature is constant at \(30^\circ C\). The body takes time \({t_1}\) to cool from \(90^\circ C\) to\(89^\circ C\) and time \({t_2}\) to cool from \(60^\circ C\) to \(59.5^\circ C\). Then,

1 \(t_{2}=2 t_{1}\)
2 \(t_{2}=t_{1} / t_{2}\)
3 \(t_{2}=4 t_{1}\)
4 \(t_{2}=t_{1}\)
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PHXI11:THERMAL PROPERTIES OF MATTER

366661 The rate of cooling at \(600\;K\), if surrounding temperature is \(300\;K\) is \(H\). The rate of cooling at \(900\;K\) is:

1 \(\frac{{16}}{3}H\)
2 \(2\,H\)
3 \(3\,H\)
4 \(\frac{{2}}{3}H\)
PHXI11:THERMAL PROPERTIES OF MATTER

366662 When a calorimeter contains \(40\;g\) of water at \(50^\circ C\), then the temperature falls to \(45^\circ C\) in 10 minutes. The same calorimeter contains \(100\;g\)of water at \(50^\circ C\), it takes 20 minutes for the temperature to become \(45^\circ C\). Find the water equivalent of the calorimeter.

1 \(5\;g\)
2 \(20\;g\)
3 \(10\;g\)
4 \(30\;g\)
PHXI11:THERMAL PROPERTIES OF MATTER

366663 A bucket full of hot water cools from \(75^\circ C\) to \(70^\circ C\) in time \(T_{1}\), from \(70^\circ C\) to \(65^\circ C\) in time \(T_{2}\) and from \(65^\circ C\) to \(60^\circ C\) in time \(T_{3}\), then

1 \(T_{1}>T_{2}>T_{3}\)
2 \(T_{1}=T_{2}=T_{3}\)
3 \(T_{1}>T_{2} < T_{3}\)
4 \(T_{1} < T_{2} < T_{3}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366664 A hot body is allowed to cool. The surrounding temperature is constant at \(30^\circ C\). The body takes time \({t_1}\) to cool from \(90^\circ C\) to\(89^\circ C\) and time \({t_2}\) to cool from \(60^\circ C\) to \(59.5^\circ C\). Then,

1 \(t_{2}=2 t_{1}\)
2 \(t_{2}=t_{1} / t_{2}\)
3 \(t_{2}=4 t_{1}\)
4 \(t_{2}=t_{1}\)
NEET DIGITAL LIBRARY
PHXI11:THERMAL PROPERTIES OF MATTER

366661 The rate of cooling at \(600\;K\), if surrounding temperature is \(300\;K\) is \(H\). The rate of cooling at \(900\;K\) is:

1 \(\frac{{16}}{3}H\)
2 \(2\,H\)
3 \(3\,H\)
4 \(\frac{{2}}{3}H\)
PHXI11:THERMAL PROPERTIES OF MATTER

366662 When a calorimeter contains \(40\;g\) of water at \(50^\circ C\), then the temperature falls to \(45^\circ C\) in 10 minutes. The same calorimeter contains \(100\;g\)of water at \(50^\circ C\), it takes 20 minutes for the temperature to become \(45^\circ C\). Find the water equivalent of the calorimeter.

1 \(5\;g\)
2 \(20\;g\)
3 \(10\;g\)
4 \(30\;g\)
PHXI11:THERMAL PROPERTIES OF MATTER

366663 A bucket full of hot water cools from \(75^\circ C\) to \(70^\circ C\) in time \(T_{1}\), from \(70^\circ C\) to \(65^\circ C\) in time \(T_{2}\) and from \(65^\circ C\) to \(60^\circ C\) in time \(T_{3}\), then

1 \(T_{1}>T_{2}>T_{3}\)
2 \(T_{1}=T_{2}=T_{3}\)
3 \(T_{1}>T_{2} < T_{3}\)
4 \(T_{1} < T_{2} < T_{3}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366664 A hot body is allowed to cool. The surrounding temperature is constant at \(30^\circ C\). The body takes time \({t_1}\) to cool from \(90^\circ C\) to\(89^\circ C\) and time \({t_2}\) to cool from \(60^\circ C\) to \(59.5^\circ C\). Then,

1 \(t_{2}=2 t_{1}\)
2 \(t_{2}=t_{1} / t_{2}\)
3 \(t_{2}=4 t_{1}\)
4 \(t_{2}=t_{1}\)
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