Physics Test 90...

Two metal rods, 1 and 2 of same area have same temperature difference between their ends, their thermal conductivities are K₁, K₂ and length ℓ₁ and ℓ₂ respectively. What is required condition for same rate of heat conduction in them :

The number of hydrogen molecules in a cylinder of volume 1m³ at a temperature of 27°C and pressure 13.8 Pa is :
(Given K = 1.38 × 10^–23 JK^–1)

The adiabatic Bulk modulus of a Triatomic non-linear gas at atmospheric pressure is :

If the heat of 120 J is added to a gaseous system and change in internal energy is 50 J, then the amount of work done is :

The volume of a metal sphere increase by 0.18% when its temperature is raised by 30°C. The coefficient of linear expansion of metal is :

The rms velocity of O₂ molecules is 500 m/s. What will be the rms velocity of H₂ at the same temperature :

Under steady state, the temperature of a body :

At what temperature does the temperature in Celsius and Fahrenheit equalise :

A body of mass 5kg falls from h = 30 m. If all mechanical energy is converted into heat, then find heat produced is nearly equal to :

Heat required in converting 1g ice at –10°C into steam at 100°C will be :