Related Questions

  1. Large transformers, when used for some time, become hot and are cooled by circulating
  2. A black body at a temperature of 227⁰C radiates heat at a rate of 20 cal m⁻²s⁻¹.
  3. An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
  4. The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is
  5. When the angle of incidence is 60° on the surface of a glass slab, it is found