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  1. A nucleus of uranium decays at rest into nuclei of thrrium and helium. Then
  2. The dimensional formula of Plancks’s constant and angular momentum are
  3. A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
  4. If two bodies are projected at 30⁰ and 60⁰ respectively with the same velocity, then
  5. The electric resistance of a certain wire of iron is R. If its length and radius