Physics
(i) How is the e.m.f. across primary and secondary coils of a transformer related with the number of turns of coil in them?
(ii) On which type of current do transformers work?
Related Questions
(i) What do you understand by free vibrations of a body?
(ii) Why does the amplitude of a vibrating body continuously decrease during damped vibrations?
A solid metal weighing 150 g melts at it's melting point of 800 °C by providing heat at the rate of 100 W. The time taken for it to completely melt at the same temperature is 4 min. What is the specific latent heat of fusion of the metal?
(i) What do you understand by the term nuclear fusion?
(ii) Nuclear power plants use the nuclear fission reaction to produce electricity. What is the advantage of producing electricity by fusion reaction?
(i) How can a temperature in degree Celsius be converted into S.I. unit of temperature?
(ii) A liquid X has the maximum specific heat capacity and is used as a coolant in Car radiators. Name the liquid X.