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Flash light equipped with a new set of batteries produces bright white light. As the batteries wear out

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The light intensity gets reduced with a no change in its colour

Light colour changes first to yellow an then red with no change in intensity

It stops working suddenly while giving white light

Colour changes to red and also intensity gets reduced

answer is D.

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Detailed Solution

As temperature decrease

$\begin{array}{l} E = {eAσT}^{4} \\ \Rightarrow Intensity reduce \\ and λ_{max} T = constant \\ λ_{max} :increase \end{array}$

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