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 | SaraNextGen Top Answer
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 |
1 Answer
127 votes
Answer Key / Explanation : (d) -
Wavelength of incident waves
Cut off (threshold)wavelength
=380nm
Then
K
=
=1237
=
= 1.5eV
127 votes
Answer Link
127