Nature of Physical World and Measurement — Physics STD 11 — Question

Two vessels A and B contain the same ideal gas. The volume of B is twice that of A, the pressure in B is twice that in A and the temperature of B is twice that of A. The ratio of the number of gas molecules in A and B is

Boyles’ law is applicable in ……

Which of the following equations represents a wave?

Water venturimeter works on the principle of ……….

A solid sphere is rolling down in the inclined plane, from rest without slipping. The angle of inclination with horizontal is 30°. The linear acceleration of the sphere is –

A body is subjected under three concurrent forces and it is in equilibrium. The resultant of any two forces is –

The average translational K.E. of O2(molar mass 32) molecules at a particular temperature is 0.048 eV. The translational K.E. of N2 (molar mass 28) molecules in eV at the same temperature is ……….

A carnot engine absorbs heat at 127°C and rejects heat at 87°C. The efficiency of engine is

The fractional change in volume per unit increase in pressure is called ……..