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Consider a light bulb of 100 watts power. When switched on, what is the surface temperature of the tungsten filament in °C. Suppose the surface to be a black surface having value of area equal to 8 x 10-5 m2

  • a)
    2166

  • b)
    1893

  • c)
    800

  • d)
    3786

Correct answer is option 'B'. Can you explain this answer?
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Consider a light bulb of 100 watts power. When switched on, what is th...
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T = 2166 K (or) 1893 °C
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Consider a light bulb of 100 watts power. When switched on, what is th...
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T = 2166 K (or) 1893 °C
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A light bulb?

The surface temperature of the tungsten filament in a 100 watt light bulb can reach up to 2500 degrees Celsius (4532 degrees Fahrenheit) when switched on. This high temperature is necessary for the filament to glow and produce light.
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