Physics Test - ...

Fluids offer resistance to motion due to internal friction, this property is called ________.

A reversible heat engine receives \(3000 K J\) of heat from a constant temperature source at \(650 K\). If the surroundings is at \(295 K\), calculate the availability of heat energy.

If the absolute refractive index of a medium is \(2\), then the speed of the wavefront of light in the medium is:

A concave mirror of focal length 'f' forms a real image when an object is placed at a distance ' \(p\) ' from the focal point. The ratio of the size of the real image to the size of the object is:

It is very difficult to measure a parallax angle less than 0.01 arcsec from Earth because of ___________________.

When the kinetic energy of an electron is increased the wavelength of the associated wave will ______.

The current through the capacitor is of the applied voltage.

The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV and the stopping potential for a radiation incident on this surface is 5 V. The incident radiation lies in:

Which one among the following waves are called waves of heat energy?

A body of mass 5 kg is placed on a rough horizontal surface. What is the maximum value of friction that can act on it? (Given μ = 0.3 and g = 10 m/s²)