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8 DECEMBER 2021 CURRENT AFFAIRS QUIZ

Heat flows from one body to other when they have

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Cork is a good insulator because it has

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Temperature of steam at around 540°C can be measured by

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Absorptivity of a body will be equal to its emissivity

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Which of the following is expected to have highest thermal conductivity?

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According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a

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In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the

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Which of the following would lead to a reduction in thermal resistance?

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Unit of thermal conductivity in S.I. units is

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The energy distribution of an ideal reflector at higher temperatures is largely in the range of

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