Two Large Closely Spaced Concentric Spheres (Both of Which Are

question 31

Multiple Choice

Two large closely spaced concentric spheres (both of which are perfect black body radiators) are maintained at temperatures of 127°C and ² 7°C respectively. The space in between the two spheres is evacuated. Taking Stefan Boltzmann constant as 5.67 x 10⁸ watt m²K the rate of radiation in watts per sq. m between the two spheres is approximately

• A)992
• B)762
• C)37,500 kg
• D)852
• E)666

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Definitions:

Underapplied

A situation where the allocated costs in accounting are less than the actual costs incurred.

Production Volume Measures

Metrics or units of measurement used to gauge the quantity of products created by a company within a specific period.

Direct Labour Hours

The total hours worked by employees directly involved in the production process, not including hours worked by supervisory or maintenance personnel.

Machine Hours

A measure of production time, representing the hours a machine is operated in the manufacturing of a product.