Work, Energy and Power — Physics STD 11 — Question

Time taken by the rolling object in inclined plane to reach its bottom is –

The torque in rotational motion is analogous to in transnational motion –

When a solid sphere is undergoing pure rolling, the ratio of transnational kinetic energy to rotational kinetic – energy is –

If P = mV then the direction of P along-

For rotational motion, moment of inertia is a measure of –

The dimension of power is

Two balloons are filled, one with pure He gas and the other with air. If the pressure and temperature in both the balloons are same the number of molecules per unit volume is

The maximum possible error in the difference of two quantities is ……

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