The radiation corresponding to 3 \\to2 transition of a hydrogen atom falls on a gold surface to generate photoelectrons. These electrons are passed through a magnetic field of 5 \\times10^{-4} {T}. Assume that the radius of the largest circular path followed by these electrons is 7 {mm}, the work function of the metal is: (Mass of electron =9.1 \\times10^{-31} {kg} ) [20 Jul 2021 Shift 1]

JEE Main 20 July 2021 Shift 1 Solved Paper

Section: Physics

Question : 20 of 90

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The radiation corresponding to 3→2 transition of a hydrogen atom falls on a gold surface to generate photoelectrons. These electrons are passed through a magnetic field of 5×10−4T. Assume that the radius of the largest circular path followed by these electrons is 7mm, the work function of the metal is:
(Mass of electron =9.1×10−31kg )

[20 Jul 2021 Shift 1]

1.36 eV
1.88 eV
0.16 eV
0.82 eV

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