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  1. The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected
  2. A bullet comes out of the barrel of gun of length 2m with a speed of 800 m/s
  3. Two cells, having the same e.m.f. are connected in series through an external resistance
  4. When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid
  5. An electron having charge e and mass m is moving in a uniform electric field E.