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JEE Main 24 February 2021, Shift 1, Chemistry Q53

Question 53 of 90 in this shift, Chemistry question 23 of 30, Section B.

A proton and a

\mathrm{Li^{3+}}

nucleus are accelerated by the same potential. If

\lambda_{\mathrm{Li}}

and

\lambda_{\mathrm{p}}

denote the de Broglie wavelengths of

\mathrm{Li^{3+}}

and proton respectively, then the value of

\frac{\lambda_{\mathrm{Li}}}{\lambda_{\mathrm{p}}}

x \times 10^{-1}

. The value of

x

is __________. (Rounded off to the nearest integer) [Mass of

\mathrm{Li^{3+}}

=8.3 mass of proton]

Official answer

NTA final key.

Same idea in other shifts