On a new scale of temperature, which is linear and called the \(\text{W}\) scale, the freezing and boiling points of water are \(39^\circ ~\text{W}\) and \(239^\circ ~\text{W}\) respectively. What will be the temperature on the new scale corresponding to a temperature of \(39^\circ ~\text{C}\) on the Celsius scale?
1. \(78^\circ ~\text{W}\)
2. \(117^\circ ~\text{W}\)
3. \(200^\circ ~\text{W}\)
4. \(139^\circ ~\text{W}\)

Subtopic:  Temperature and Heat |
 85%
From NCERT
AIPMT - 2008
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If a graph is plotted between the temperature of a body in degrees Celsius (along the \(\mathrm{y}\)-axis) and Fahrenheit (along the \(\mathrm{x}\)-axis) at different temperatures, then the slope of the graph will be:
1. \(\frac{5}{9}\)

2. \(\frac{9}{5}\)

3. \(\frac{3}{5}\)

4. \(\frac{5}{3}\)

Subtopic:  Temperature and Heat |
 79%
From NCERT
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A temperature of \(100^{\circ}\text {F}\) (Fahrenheit scale) is equal to \(T~\text{K}\) (Kelvin scale). The value of \(T\) is:
1. \(310.9\)
2. \(37.8\)
3. \(100\)
4. \(122.4\)

Subtopic:  Temperature and Heat |
 75%
From NCERT
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Two absolute scales \(A \) and \(B,\) have triple points of water defined to be \(200 A\) and \(350 B.\) The relationship between \(T_A \) and \(T_B\):
1. \(T_A = {5 \over 7}T_B\)
2. \(T_A = { 4 \over 7}T_B\)
3. \(T_A = { 6 \over 7}T_B\)
4. \(T_A = T_B\)
Subtopic:  Temperature and Heat |
 74%
From NCERT
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The temperature of a body on the Kelvin scale is found to be \(x^\circ~\text K.\) When it is measured by a Fahrenheit thermometer, it is found to be \(x^\circ~\text F,\) then the value of \(x\) is:
1. \(40\)

2. \(313\)

3. \(574.25\)

4. \(301.25\)

Subtopic:  Temperature and Heat |
 74%
From NCERT
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The triple points of neon and carbon dioxide are \(24.57~\text K\) and \(216.55~\text K\) respectively. The value of these temperatures on Fahrenheit scales will be: 
1. \(-415.44^\circ ~\text{F} ,-69.88^\circ ~\text{F}\)
2. \(-248.58^\circ ~\text{F} ,-56.60^\circ~ \text{F}\)
3. \(315.44^\circ ~\text{F} ,-69.88^\circ ~\text{F}\)
4. \(415.44^\circ ~\text{F} ,-79.88^\circ~ \text{F}\)
Subtopic:  Temperature and Heat |
 68%
From NCERT
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The value of the coefficient of volume expansion of glycerin is \(5\times10^{-4}\) K-1. The fractional change in the density of glycerin for a temperature increase of \(40^\circ \mathrm{C}\) will be:

1. \(0.015\) 2. \(0.020\)
3. \(0.025\) 4. \(0.010\)
Subtopic:  Thermal Expansion |
 82%
From NCERT
NEET - 2015
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The coefficients of linear expansion of brass and steel rods are \(\alpha_1\) and \(\alpha_2\), lengths of brass and steel rods are \(l_1\) and \(l_2\) respectively. If (\(l_2-l_1\)) is maintained the same at all temperatures, Which one of the following relations holds good?
1. \(\alpha_1 l_2^2=\alpha_2l_1^2\)
2. \(\alpha_1^2 l_2=\alpha_2^2l_1\)
3. \(\alpha_1 l_1=\alpha_2l_2\)
4. \(\alpha_1 l_2=\alpha_2l_1\)

Subtopic:  Thermal Expansion |
 84%
From NCERT
NEET - 2016
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When a uniform rod is heated, which of its following properties will increase as a result of it?
1. mass
2. weight
3. center of mass
4. moment of inertia

Subtopic:  Thermal Expansion |
 73%
From NCERT
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A copper rod of \(88\) cm and an aluminium rod of an unknown length have an equal increase in their lengths independent of an increase in temperature. The length of the aluminium rod is:
\(\left(\alpha_{Cu}= 1.7\times10^{-5}~\text{K}^{-1}~\text{and}~\alpha_{Al}= 2.2\times10^{-5}~\text{K}^{-1}\right)\)
1. \(68~\text{cm}\)
2. \(6.8~\text{cm}\)
3. \(113.9~\text{cm}\)
4. \(88~\text{cm}\)

Subtopic:  Thermal Expansion |
 77%
From NCERT
NEET - 2019
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