Physics Test - ...

Two particles execute SHM of the same amplitude and frequency along the same straight line. If they pass each other when going in opposite directions, each time their displacement being half their amplitude, the phase difference between them is:

Work is best defined as:

When a horizontal disc is rotated about its vertical axis and sand is dropped on it, then its angular velocity will:

Mutual inductance of two coils can be increased by:

Moment of inertia of a uniform circular disc about diameter is I. Its moment of inertia about an axis perpendicular to its plane and passing through a point on its rim will be:

A short linear object of length b lies along the axis of a concave mirror of focal length \(\mathrm{f}\) at a distance u from the pole of the mirror. The size of the image is approximately equal to:

Practically, the work output of a machine is _______ the work input due to the effect of friction.

The electric field of a plane electromagnetic wave is given by:

\(\overrightarrow{\mathrm{E}}=\mathrm{E}_{0}(\hat{\mathrm{x}}+\hat{\mathrm{y}}) \sin (\mathrm{kz}-\omega \mathrm{t})\)

Its magnetic field will be given by:

The percentage error in the measurement of mass and speed are \(2 \%\) and \(3 \%\) respectively. The error in the estimate of kinetic energy obtained by measuring mass and need will be:

A weight Mg suspended to a wire produces an increment 'l' in its length. Work done in the process will be: