Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
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Nuclear sizes are expressed in a unit named |
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Metals are good conductors of electricity because |
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Let a thin capillary tube be replaced with another tube of insufficient length then, we find water |
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Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? |
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If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same |
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Pick out the scalar quantity |
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Rectifiers are used to convert |
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out of the following, which is not emitted by radioactive substance? |
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Sound waves in air are |
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Magnetism at the centre of a bar magnet is |
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