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1 May, 21:06

What is the wavelength of 7.0-TeV protons? A) 550 nm B) 750 nm C) 5.4x10^-15 m D) 3.2x10^-18 m E) 1.8x10^-19 m

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  1. 1 May, 23:25
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    1.776 x 10^-19 m

    Explanation:

    Energy, E = 7 TeV

    Let λ be the wavelength.

    Energy = h c / λ

    Where, h is the Planks, s constant and c be the velocity of light

    h = 6.63 x 10-^-34 Js

    c = 3 x 10^8 m/s

    Convert TeV into J

    1 TeV = 1.6 x 10^-7 J

    So, E = 7 x 1.6 x 10^-7 = 11.2 x 10^-7 J

    11.2 x 10^-7 = (6.63 x 10^-34 x 3 x 10^8) / λ

    λ = 1.776 x 10^-19 m
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