the photoelectric effect frequency

The Photoelectric Effect - There are three ways in which electrons eject out of a material. They are (i) Thermionic emission (ii) Field emission (iii) Photo electric emission In all the above cases, energy is given to the material but in different forms. If given in the form of ..

There are three ways in which electrons eject out of a material. They are (i) Thermionic emission (ii) Field emission (iii) Photo electric emission In all the above cases, energy is given to the material but in different forms. If given in the form of heat it is called as Thermionic emission, if in..

Dual Nature of Radiation and Matter..

Let a stationary observer on a platform listen to the sound emitted by the whistle of an incoming train. As the train approaches the platform, an increase in the pitch of the sound will be observed. As the engine moves away from him, there will be a decrease in the pitch of the sound. The same ..

The Doppler effect provides a convenient means of tracking a satellite that is emitting a radio signal of constant frequency. The frequency of the signal received on the Earth changes as the satellite is passin..

The Doppler effect provides a convenient means of tracking a satellite that is emitting a radio signal of constant frequency. The frequency of the signal received on the Earth changes as the satellite is passing. If the received signal is combined with a constant sig..

Since the denominator in the RHS of the above equation is less than 1, f 1 > f 2 . Thus, the increase in the apparent frequency is greater when the source approaches a stationary observer than, when the observer approaches a stationary source. In other words, Doppler effect i..

Whenever there is a relative motion between a source of light and the observer, the apparent frequency of light received by the observer is different from the true frequency of light emitted actually from the source of light. If a source of light emits waves of frequency..

>The direction of the induced current is given by Fleming's right-hand rule. This forms the basis of the electric generator An electric generator is a device that converts mechanical energy into electrical energy In our houses we receive AC electric power of 220 V with a frequency of 50 H..

. If classical theory is true, the lesser the intensity the energy imparted to the electron must be less and hence there should have been a 'threshold intensity' below which there is no photoelectric effect. But this is not true. Instead, it was found that the frequency..