Physics Past Questions and Answers

Which of the following assumptions is not valid for an ideal gas ?

A body is pulled over a distance of 500m by a force of 20N. If the power developed is o.4 kW, calculate the time interval during which the force is applied

A metal of mass 200g at a temperature of 100^oC is placed in 100g of water at 25^oC in a container of negligible heat capacity. If the final steady temperature is 30^oC, calculate the specific heat capacity of the metal. [specific heat capacity of the water is 4200 Jkg^-1 K^-1]

Ether produces a cooling effect when it is poured on the hand because it has

Which of the following statements about the image formed by a plane mirror is not correct?