Joule sec is the unit of_________________?

Related Mcqs:

Unit of thermal conductivity in S.I. units is__________________?

A. J/m2 sec B. J/m °K sec C. W/m °K D. A. and C. above E. B. and C. above...

Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in _________________?

A. electric heater B. steam condenser C. melting of ice D. refrigerator condenser coils E. boiler...

Emissivity of a white polished body in comparison to a black body is________________?

A. higher B. lower C. same D. depends upon the shape of body E. none of the above...

Total emissivity of polished silver compared to black body is___________________?

A. same B. higher C. more or less same D. very much lower E. very much higher...

40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is____________________?

A. 0.45 B. 0.55 C. 0.40 D. 0.75 E. 0.60...