CapacitanceHard
Question
How much heat is developed in a 210 watt electric bulb in 5 minutes :-
(mechanical equivalent of heat = 4.2 joule/cal.)
(mechanical equivalent of heat = 4.2 joule/cal.)
Options
A.7500 cal.
B.15000 cal.
C.30000 cal.
D.22500 cal.
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