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Q. No.The temperature at which the Celsius and Fahrenheit thermometers agree (to give the same numerical value) is:
1. \(-40^\circ\)
2. \(40^\circ\)
3. \(0^\circ\)
4. \(50^\circ\)
Subtopic: Temperature and Heat |
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From NCERT
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The absolute zero temperature on the Fahrenheit scale is (approximately):
1. \(-273^{\circ}\text{F}\)
2. \(-32^{\circ}\text{F}\)
3. \(-460^{\circ}\text{F}\)
4. \(-132^{\circ}\text{F}\)
Subtopic: Temperature and Heat |
55%
From NCERT
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The graph between two temperature scales \(A\) and \(B\) is shown in the figure. Between upper fixed point and lower fixed point there are \(150\) equal division on scale \(A\) and \(100\) on scale \(B.\) The relationship for conversion between the two scales is given by:
1. \(\dfrac{t_A-180}{100}=\dfrac{t_B}{150} \)
2. \(\dfrac{t_A-30}{150}=\dfrac{t_B}{100} \)
3. \(\dfrac{t_B-180}{150}=\dfrac{t_A}{100} \)
4. \(\dfrac{t_B-40}{100}=\dfrac{t_A}{180}\)
1. \(\dfrac{t_A-180}{100}=\dfrac{t_B}{150} \)
2. \(\dfrac{t_A-30}{150}=\dfrac{t_B}{100} \)
3. \(\dfrac{t_B-180}{150}=\dfrac{t_A}{100} \)
4. \(\dfrac{t_B-40}{100}=\dfrac{t_A}{180}\)
Subtopic: Temperature and Heat |
70%
From NCERT
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A \(100\) g of the iron nail is hit by a \(1.5\) kg hammer striking at a velocity of \(60\) ms–1. What will be the rise in the temperature of the nail if one-fourth of the energy of the hammer goes into heating the nail?
[Specific heat capacity of iron = \(0.42\) Jg–1 °C–1]
[Specific heat capacity of iron = \(0.42\) Jg–1 °C–1]
| 1. | \(675\)°C | 2. | \(1600\)°C |
| 3. | \(16.07\)°C | 4. | \(6.75\)°C |
Subtopic: Temperature and Heat |
64%
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Which of the curves in the figure represents the relation between Celsius and Fahrenheit temperature?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Temperature and Heat |
72%
From NCERT
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