Heat TransferMedium
Question
Flash light equipped with a new set of batteries, produces bright light. As the batteries wear out:
Options
A.The light intesity gets reduced with no change in its color.
B.light color changes first to yellow and then red with no change in intensity
C.It stops working suddenly
D.Color changes to red and also intensity gests reduced
Solution
Due low current, heat produced is also reduced. Hence temperature goes down resulting in change in colour of filament wire to red intensity also gets reduced.
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