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  1. A carnot’s engine operates with source at 127° C and sink at 27°C
  2. A uniform chain of length L and mass m is kept on a smooth table. It is released
  3. The near point and far point of a person are 40 cm and 250 cm, respectively.
  4. In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series
  5. A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction