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How does the heat emitted by lamps affect their efficiency? Emitted heat cools the lamp, thereby increasing its efficiency. Heat emitted warms the air and

How does the heat emitted by lamps affect their efficiency? Emitted heat cools the lamp, thereby increasing its efficiency. Heat emitted warms the air and increases efficiency. The efficiency depends only on the light emitted. It does not depend on the heat emitted at all. Heat emitted reduces the efficiency

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