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Can someone Please help me? One of the main disadvantages of incandescent lights is that _________.

the light they cast is hard on the eyes

only 10% of the energy makes light

they need extra sockets to be used in a normal house

User Barryred
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1 Answer

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Answer: Only 10% of the energy makes light

Step-by-step explanation:

User Andrei  Belokopytov
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