The device used to measure the emf of a cell without drawing current is MCQ with Answer and Explanation
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Question #1
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A piece of ice is floating in a glass beaker containing water. When all the ice melts, the level of water in the beaker will:
Correct Answer: Option A
Explanation:
According to Archimedes' principle, the floating ice displaces a volume of water equal to its own weight. When the ice melts, it transforms into a volume of water that is exactly equal to the volume of water it displaced while floating. Therefore, the water level remains unchanged.
According to Archimedes' principle, the floating ice displaces a volume of water equal to its own weight. When the ice melts, it transforms into a volume of water that is exactly equal to the volume of water it displaced while floating. Therefore, the water level remains unchanged.
Question #2
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A full wave rectifier uses
Question #3
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The colour of an object is due to
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