Last Updated On [03-11-2023]
In a photoelectric effect experiment the threshold wavelength of light is 380nm.If the wavelength of incident light is 260nm, the maximum kinetic energy of emitted electrons will be: Given E (in eV)=
(a)
4.5eV
(b)
15.1eV
(c)
3.0eV
(d)
1.5eV
In a photoelectric effect experiment the threshold wavelength of light is 380nm.If the wavelength of incident light is 260nm, the maximum kinetic energy of emitted electrons will be: Given E (in eV)=
(a)
4.5eV
(b)
15.1eV
(c)
3.0eV
(d)
1.5eV
Question ID - 51323 :-
In a photoelectric effect experiment the threshold wavelength of light is 380nm.If the wavelength of incident light is 260nm, the maximum kinetic energy of emitted electrons will be: Given E (in eV)=
(a)
4.5eV
(b)
15.1eV
(c)
3.0eV
(d)
1.5eV
|
In a photoelectric effect experiment the threshold wavelength of light is 380nm.If the wavelength of incident light is 260nm, the maximum kinetic energy of emitted electrons will be: Given E (in eV)= |
|||
|
(a) |
4.5eV |
(b) |
15.1eV |
|
(c) |
3.0eV |
(d) |
1.5eV |
Wavelength of incident waves
Cut off (threshold)wavelength
=380nm
Then
K
=
=1237
=
= 1.5eV
Next Question :
|
In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line.
One may conclude that: |
|||
|
(a) |
R(T)= |
(b) |
R(T)=R0 |
|
(c) |
R(T)=R0 |
(d) |
R(T)=R0 |
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