Violet
. It will be maximum for photons having maximum energy. Violet color photon has minimum wavelength and maximum energy therefore stopping potential will be maximum for it.
For which Colour the stopping potential is minimum?
Violet
has the least wavelength and the highest energy. Therefore, stopping potential is maximum for violet colour.
Why is the stopping potential of blue color LED greater than that of a red color LED?
So, in terms of the actual definition of intensity, both LED’s are the same as long as their input powers are the same. However, in the same case, the red LED with the longer wavelength
will light up brighter
, because it has greater photon density than the blue one.
Can stopping potential be 0?
| φ = hf 0 = hc | λ 0 |
|---|
Why does the stopping potential vary on varying the Colour of the light?
Different wavelengths (or colours) of light carry different amounts energy. If
the light has a high enough energy
, the electrons will escape from the surface of the material. … Thus there is a threshold of energy needed for the metal to lose an electron, and this threshold is different for different materials.
What is the slope of stopping potential and frequency represent?
What does the slope of the line between stopping potential and frequency represent? Dear student, The slope represents
the work function
.
Does stopping potential depends on intensity?
Note
Stopping potential doesn’t depend upon
the intensity of incident light . By increasing the intensity of the light , the stopping potential value remains undeterred whereas the saturated current increases.
What color LED uses most power?
Red uses less power than green,
green
uses more power than blue, and blue uses more power than green.
Is red light stronger than blue?
This diagram shows the relative wavelengths of blue light and red light waves. Blue light has shorter waves, with wavelengths between about 450 and 495 nanometers. Red light has longer waves, with wavelengths around 620 to 750 nm.
Blue light has a higher frequency
and carries more energy than red light.
Is red or purple higher energy?
When it comes to light waves,
violet is the highest energy color
and red is the lowest energy color. Related to the energy and frequency is the wavelength, or the distance between corresponding points on subsequent waves.
What is the symbol of stopping potential?
Stopping potential is that value of retarding potential difference between two plates which is just sufficient to halt the most energetic photoelectrons emitted. It is denoted by
“Vo”
.
What is the formula of stopping potential?
Given: Stopping potential =
V
s
= 2 V
, wavelength of incident light = λ = 160 nm = 160 x 10
– 9
m, Threshold wavelength = λ
o
= 240 nm = 240 x 10
– 9
m, speed of light = c = 3 x 10
8
m/s, Planck’s constant = h = 6.63 x 10
– 34
Js, Charge on electron = e = 1.6 x 10
– 19
C.
What is importance of stopping potential?
The stopping voltage is
readily used to determine the kinetic energy that the electrons have as they are ejected from the metal plate
. The product of the charge on an electron and the stopping voltage gives us the maximum kinetic energy of that ejected electron.
What is a quantum of light called?
Photon, also called light quantum, minute energy packet of electromagnetic radiation. … The concept originated (1905) in Albert Einstein’s explanation of the photoelectric effect, in which he proposed the existence of discrete energy packets during the transmission of light.
What is the minimum energy required to remove an electron?
This term is also related with photoelectric effect as discussed in option (A), So,
Work function
is defined as the minimum amount of energy needed to remove an electron from the atom. So, the minimum energy required to remove an electron is called the Work function.
Can photoelectric effect be seen with red light?
Explanation: Because light behaves like particles rather than a continuous stream, even very
high -intensity red light will never be able to
overcome an electrons’ work function (in this situation), as every individual photon fails to do so. …
