Thermodynamics — Physics STD 12 Science — Question

In U. C. M. (Uniform Circular Motion), prove the relation \(\vec{v}=\vec{\omega} \times \vec{r}\), where symbols have their usual meanings.

State the conditions when the magnetic potential energy of a magnetic dipole (current-carrying coil) kept in the uniform magnetic field be minimum and maximum.

Distinguish between an ammeter and a voltmeter.

The initial pressure and volume of a gas enclosed in a cylinder are \(2 \times 10^5 N / m ^2\) and \(6 \times 10^{-3} m ^3\) respectively. If work done in compressing the gas at constant pressure is \(150 J\), find the final volume of the gas.

Explain formation of clouds at high altitude.

State any two limitations of Bohr’s model for the hydrogen atoms.

Draw a neat labelled diagram showing the plane of vibration and plane of polarisation for polarised light.

Under what conditions can we consider the oscillations of a simple pendulum to be linear simple harmonic?