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  1. The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5Å
  2. An α-particle moves in a circular path of radius 0.83 cm in the presence of a magnetic
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  4. Graph of force per unit length between two long parallel current carrying
  5. A jar is filled with two non-mixing liquids 1 and 2 having densities