Q181
Open questionThe cloudy nights are warmer than clear nights because
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Physics GK · all questionsHeat and Thermodynamics
Heat and Thermodynamics
practice.
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Q182
Open questionWoollen clothes keep the body warm because
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Q183
Open questionThe cooling by a desert Cooler is based on
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Q184
Open questionWhat is the function of the thermostat of a refrigerator?
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Q185
Open questionA circular plate, a cube and a sphere all made up of same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?
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Q186
Open questionWhich of the following is a good conductor of heat but bad conductor of electricity?
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Q187
Open questionThe difference in temperature between two bodies is 30° C. What is the difference in degree Fahrenheit?
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Q188
Open questionConsider the following statements.
Assertion (A): Space based solar power (SBSP), it is suggested be made a national goal.
Reason (R): Supply of SBSP is 99% uninterrupted throughout the year, besides the enormity of energy availability.
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Assertion (A): Space based solar power (SBSP), it is suggested be made a national goal.
Reason (R): Supply of SBSP is 99% uninterrupted throughout the year, besides the enormity of energy availability.
Select the correct answer:
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Q189
Open questionWhen a piece of ice floating in a glass of water melts, the level of water will
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Q190
Open questionWe feel cool when we sit near the fan, this is because
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Q191
Open questionWhat is the value of 273 K?
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Q192
Open questionAmount of heat per unit mass required to change a substance from a solid to a liquid at the same temperature and pressure.
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Q193
Open questionWhen water freezes its density
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Q194
Open questionWhich one of the following statement regarding a thermo flask is not correct?
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Q195
Open questionAccording to Wien's Law
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Q196
Open questionIf the temperature of a place increases suddenly, the relative humidity
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Q197
Open questionWoolen clothes keep the body warm in winter because-
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Q198
Open questionIn an Earthen pitcher, the water remains cold due to the process of
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Q199
Open questionThe boiling point of an alcohol is 78°C. What is the temperature on the Kelvin scale?
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Q200
Open questionThe most important function of perspiration is to
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