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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. 10 mA current can pass through a galvanometer of resistance 25 ohm.
  3. If two vectors 2i+3j+k and -4i-6j-λk are parallel to each other, then the value of λ is
  4. Two Carnot engine A and B are operated in series. The engine A receives
  5. In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V