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प्रश्न
Why does not the heating coil produce any visible light? in an electric stove.
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उत्तर
It is because, the temperature of heating element is around 1000°C, whereas visible light is produced if the temperature rises above 1500°C.
संबंधित प्रश्न
1 calorie = _________ joule.
Write an expression for the electrical power spent in flow of current through a conductor in terms of
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(i) Explain, why the defelct ion occurs in the galvanometer.
(ii ) State whether th e current in the coil is cl ockwise or anticl ockwise
when viewed from the end P.
(iii ) State th e observation in G when the coil is moved away from north
pole N of the magnet keeping the magnet stationary.
(iv)State the observation in G when both the coil and the magnet are
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