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Define Heat engine
Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into work.
It is explained as the ratio of useful work done (W) to the heat input.
discussion
(i) It has of continuously varying wavelengths in a exact wavelength range. (ii) It is given by solids, liquids and highly compressed gases heated to high temperature. (iii)
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Neutron possesses: (1)Positive charge (2)Negative charge (3)No charge (4)All are correct Ans: (3)No charge
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