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MBD PUBLICATION-THERMAL PROPERTIES OF MATTER (HEAT TRANSFER)-QUESTION BANK
- Radiant energy incident on a body at the rate 5000 J/sec. If coefficie...
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- The energy of 2000 J is radiated in 5 minute by hot body surface area ...
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- Conduction of heat takes place due to
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- Convection of heat takes place in
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- In radiation heat energy can be transferred
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- Radiation of light possess the following property
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- The material medium is not required for the propagation of heat in
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- If the temperation of a gas is lowered to -273^@ C . Then it,s volume ...
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- In a room containing air, heat can go from one place to another by
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- Example of diathermanous body is
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- What is the sum of co-efficient of absorption, reflection and transmis...
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- The emissivity of black body is equal to
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- Good conductor of heat and current is :
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- The co-efficient of absorption and reflection of a thin uniform plate ...
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- The co-efficient of reflection, coefficient of absorption and coeffici...
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- If an athermous body absorbs 20% of the incident radiant energy then r...
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- A rate of radiation of a perfectly black body at 0^@ C is X j/sec. Th...
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- A spherical black body with a radius of 12 cm radiates 450 W power at ...
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- A metal cube of each side 0.05 m long emits 0.6 kcal in 80 second. The...
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- A perfectly black body emits total energy of 5 xx 10^2 joules in 50 mi...
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