jee-main 2019 Q26

jee-main · India · session2_10apr_shift1 Not Maths
In a photoelectric effect experiment, the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be Given $\mathrm { E } ($ in $\mathrm { eV } ) = \frac { 1237 } { \lambda ( \mathrm { in } \mathrm { nm } ) }$
(1) 4.5 eV
(2) 3.0 eV
(3) 1.5 eV
(4) 15.1 eV
In a photoelectric effect experiment, the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be\\
Given $\mathrm { E } ($ in $\mathrm { eV } ) = \frac { 1237 } { \lambda ( \mathrm { in } \mathrm { nm } ) }$\\
(1) 4.5 eV\\
(2) 3.0 eV\\
(3) 1.5 eV\\
(4) 15.1 eV