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Why the kinetic energy of the emitted electrons varies up to a maximum value?
Wiki User
∙ 12y ago
Let the work function of a metal be W. Let C be a constant of the dimension of energy.
if Kis the maximum kinetic energy of an electron then.......W=C-K.....
(K HERE IS THE ENERGY SUPLIED BY A PHOTON TO THE ELECTRON)
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThe kinetic energy of an emitted electron must be less than hf-φ. An electron uses energy to reach the surface of the metal. KE= hf - φ A certain amount of energy is required by a photoelectron.
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What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency?
3.72*10^-19 j
What happens to the cut off voltage if the brightness of the light is increased in a photoelectric cell?
The cutoff voltage depends on the maximum kinetic energy of the emitted electrons. The brighter the light the more photons released. which means more electrons released. each photon will release an electron with the same maximum kinetic energy whether the light is bright or dim. therefor the cutoff voltage remains the same if the brightness is increased
Radiant energy is a form of?
It is emitted in waves.
Which of these is associated with he kinetic energy of electricity?
Moving Electrons.
What is the energy in streams of moving electrons?
Kinetic energy.
What is the kinetic energy of the emitted electrons when the cesium is exposed to UV rays of frequency 1.1times 1015Hz?
Before you can do anything with kinetic energy, you must know the kinetic energy equation. The equation for kinetic energy KE=hv-hv0.
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency?
3.72*10^-19 j
What happens to the cut off voltage if the brightness of the light is increased in a photoelectric cell?
The cutoff voltage depends on the maximum kinetic energy of the emitted electrons. The brighter the light the more photons released. which means more electrons released. each photon will release an electron with the same maximum kinetic energy whether the light is bright or dim. therefor the cutoff voltage remains the same if the brightness is increased
Radiant energy is a form of?
It is emitted in waves.
Which of these is associated with he kinetic energy of electricity?
Moving Electrons.
Is synchrotron radiation emitted perpendicular to the circular path of the electrons?
Yes, synchrotron radiation is emitted perpendicular to the circular path of the electrons. This is because the radiation is generated when the electrons are deflected, or accelerated, due to the magnetic field in the synchrotron. The emitted radiation is tangential to the circular path, resulting in a perpendicular radiation pattern.
The movment of electrons is what energy?
Kinetic
What is the energy in streams of moving electrons?
Kinetic energy.
What are the Differences between thermionic emission and photoelectric emission?
Electrons would have enough energy to leave the metal surface, the hot cathode. However, without the forward voltage bias, positive anode. The vacuum diode could not conduct electricity. In other words, the initial kinetic energy of the emitted electrons can be ignored [0 J].Whereas, the photo-emitted electrons possess definite amount of initial kinetic energy.K.E. of e = hf - WorkFunctionSee, the initial k.e. is not neglectable.
Why do conductors transfer heat quickly?
Because no conductor is a perfect conductor of electrical energy (apart from superconductors). This means that some electrical energy is converted to kinetic energy as the electrons vibrate/move (depending on your idea of how electrical force is moved) and this kinetic energy is emitted as heat.
Can you have maximum gravitational potential energy and maximum gravitational kinetic energy at the same point?
No, gravitational portential energy is more with more hight and gravitational kinetic energy is maximum just before reaching the ground.
How does Kinetic and Potential energy relate to Pendulums in different ways?
Maximum kinetic energy occurs at the bottom of the swing. Maximum potential energy occurs at the top of the swing.
