AIEEE 2006 Mock Test

The rms value of the electric field of the light coming from the Sun is $720\text{N/C}$. The average total energy density of the electromagnetic wave is:

A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency $\omega$. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time:

An electric bulb is rated $220\text{V}-100\text{W}$. The power consumed by it when operated on $110\text{V}$ will be:

The anode voltage of a photocell is kept fixed. The wavelength $\lambda$ of the light falling on the cathode is gradually changed. The plate current $I$ of the photocell varies as follows:

The 'rad' is the correct unit used to report the measurement of: