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JEE Main 202124 FebruaryEvening Shift

Exam: JEE Main
Year: 2021
Date: 24 February
Shift: Evening Shift
Subject: Physics
Chapter: Electromagnetic Waves

JEE Main 2021 · 24 February · Evening Shift · Physics · Electromagnetic Waves

An X-ray tube is operated at 1 . 24 million volt. The shortest...

An X-ray tube is operated at

1 . 24

million volt. The shortest wavelength of the produced photon will be:

Options

A ${10}^{- 3}nm$
B ${10}^{- 2}nm$
C ${10}^{- 4}nm$
D ${10}^{- 1}nm$

Correct answer

A. ${10}^{- 3}nm$

Step-by-step solution

${\lambda}_\min = \dfrac{1240}{\DeltaV}\left(nm\right)$

$= \dfrac{1240}{1 . 24 \times {10}^{6}} = {10}^{- 3}nm$

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