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Q. Soap bubbles show multiple colours when viewed in white light because of
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Q. Mica is used in an electric iron because it is a
Q. The freezing point of fresh water is ________ .
Q. Stars which appear single to the naked eye but are double when seen through a telescope are
Q. An energy source will supply a constant current into the load if its internal resistance is
Q. Kilowatt -hour is the unit of:
Q. Related to sound which one of the following is correct
Q. Direct Current produces a magnetic field similar to a permanent magnet. This magnetic field:
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