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What is the average temperature of the deep waters of the oceans?

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Important Questions on Thermal Properties of Matter

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A vertical closed cylinder is separated into two parts by a frictionless piston of mass m and of negligible thickness. The piston is free to move along the length of the cylinder. The length of the cylinder above piston is l1, and that below the piston is l2, such that l1>l2. Each part of the cylinder contains n moles of an ideal gas at equal temperature T. If the piston is stationary, its mass m will be given by:
(R is universal gas constant and g is the acceleration due to gravity)
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For the P-V diagram given for an ideal gas
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 Out of the following which one correctly represents the T-P diagram?
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Two spherical black bodies have radii r1 and r 2. Their surface temperatures are T1 and T 2. If they radiate same power then r2r1 is
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The temperature at which Centigrade thermometer and Kelvin thermometer gives the same reading, is
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What are the upper fixed points of the Celsius and the Fahrenheit scales?

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What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?

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The temperature of the cold junction of thermocouple is 0 °C and the temperature of hot junction is T °C. The emf is E=16T-0.04T2 μV. The inversion temperature Ti is
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On a hilly region, water boils at 95 °C.The temperature expressed in Fahrenheit is
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The triple points of neon and carbon dioxide are 24.57 K and 216.55 K respectively. Express these temperatures on the Celsius and Fahrenheit scales.
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The readings of a constant volume gas thermometer at 0°C and 100°C are 40cm of mercury and 60 cm of mercury. If its reading at an unknown temperature is 100cm of mercury column, then the temperature is
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On an X temperature scale, water freezes at –125.0° X and boils at 375.0° X. On a Y temperature scale, water freezes at –70.0° Y and boils at –30.0° Y. The value of temperature on X-scale equal to the temperature of 50.0°Y on Y-scale is
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The temperature at which Centigrade thermometer and Kelvin thermometer gives the same reading is,
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What is the change in the temperature on Fahrenheit scale and on Kelvin scale, if an iron piece is heated from 30°C to 90°C?