Dual Nature of ...

50% of X – rays obtained from a Coolidge tube pass through 0.3 mm thick aluminium foil. If the potential difference between the target and the cathode is increased, then the fraction of X – rays passing through the same foil will be

Stopping potential for photoelectrons

Which of the following electromagnetic waves has minimum frequency ?

On increasing the number of electrons striking the anode of an X – ray tube, which one of the following parameters of the resulting X – rays would increase

A electron states from rest in an electric field and acquires a speed u in reaching a point A. The potential difference between the starting point and the point A is V_A, then

When a proton is accelerated through 1 V, then its kinetic energy will be

The slope of frequency of incident light and stopping potential for a given surface will be

Proton and α − particle have the same de – Broglie wavelength. What is the same for both of them ?

Which of the following is not the property of cathode rays:

The frequency and work function of an incident photon are υ φ and 0. If v₀ is the threshold frequency, then necessary condition for the emission of photoelectron is