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Q. On a rainy day, small oil films on water show brilliant colours. This is due to
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Q. In a water lifting electric pump, we convert
Q. The purpose of choke in tube light is
Q. Radioactive elements can be traced out in living cell through a technique called
Q. Nucleons are regarded as composites sub-particles known as
Q. The power of a lens is measured in:
Q. The device which transfer the signal from low resistance region to high resistance region is
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Q. What happens if a bar magnet is cut into two pieces, transverse to its length?
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