Q65 / 90 · JEE Main 2021 (24 Feb Shift 2) · Physics

An X-ray tube is operated at $1.24$ million volt. The shortest wavelength of the produced photon will be:

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

Solution

$λ_{\min} = \frac{1240}{Δ V} (nm)$

$= \frac{1240}{1.24 \times 10^{6}} = 10^{- 3} nm$

Hence, the correct answer is option: 'A'.

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