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  1. A black body at a temperature of 227⁰C radiates heat at a rate of 20 cal m⁻²s⁻¹.
  2. The specific charge of a proton is 9.6×10⁷ C/kg. The specific charge of an alpha particle
  3. Given the value of Rydberg constant is 10⁷ m⁻¹, the wave number of the last line
  4. On bombarding U²³⁵ by slow neutron, 200 MeV energy is released. If the power output
  5. Three masses are placed on the x-axis : 300 g at origin, 500 g at x = 40 cm