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An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?
An artificial satellite stays in the orbit around the Earth because
An athlete runs before long jump to get advantage on
An atomic pile is used for
An egg sinks in soft water but floats in a concentrated solution of salt because
An electric fuse is based on
An electric iron of 750 W is used for S hours per day. Then the energy consumed in one day by the iron is:
An electrical fuse is used to interrupt excessive_?
An electron is at ground state of the H atom. Minimum energy required to excite the H atom into second excited state is
An electron microscope gives higher magnification than an optical microscope, because:
