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JEE Main Chemistry Class 11 Structure of Atom Part 1 Questions

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Question : 3 of 100

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The wavelength of electrons accelerated from rest through a potential difference of 40kV is x×10−12m. The value of x is ________ . (Nearest integer)
Given : Mass of electron =9.1×10−31kg
Charge on an electron =1.6×10−19C
Planck's constant =6.63×10−34JS

[20 Jul 2021 Shift 2]

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