A) the light intensity gets reduced with no change in its colour
B) light colour changes first to yellow andthen red with no change in intensity
C) it stops working suddenly while giving white light
D) colour changes to red and also intensity gets reduced
Correct Answer: D
Solution :
As batteries wear out, temperature of filament of flash light attains lesser value, therefore intensity of radiation reduces. Also dominating wavelength \[({{\lambda }_{m}})\] in spectrum, which is the red colour, increases.
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