Due to the change in mains voltage, the temperature of an electric bulb rises from $3000 \mathrm{~K}$ to $4000 \mathrm{~K}$. What is the percentage rise in electric power consumed?

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Due to the change in mains voltage, the temperature of an electric bulb rises from

3000 \mathrm{~K}

4000 \mathrm{~K}

. What is the percentage rise in electric power consumed?

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Correct option: A

216

Option A (216) is correct because it is the percentage rise in electric power calculated using the Stefan-Boltzmann law, where power is proportional to the fourth power of temperature.

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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