The speed of an electron having a wavelength of 10⁻¹⁰ m is

The Speed Of An Electron Having A Wavelength Of 10 Physics Question

The speed of an electron having a wavelength of 10⁻¹⁰ m is

Options

(a) 6.26×10⁶ m/s
(b) 5.25 x10⁶ m/s
(c) 7.25×10⁶ m/s
(d) 4.24×10⁶ m/s

Correct Answer:

7.25×10⁶ m/s

Explanation:

λ = h / momentum = h / mv

v = h / mλ = 6.6 × 10⁻³⁴ / (9 × 10⁻³¹) × 10⁻¹°

v = 7.25 × 10⁶ ms⁻¹

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Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)

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1 Comment on The speed of an electron having a wavelength of 10⁻¹⁰ m is

  1. P=h/lamba…..1equ
    P= momentum
    H=Planck’s constant
    Lamba= wavelength
    And
    P=MV…..2 equ
    M= mass
    V= speed
    Put 2 in 1
    MV=h/lamba
    9.1×10^-31*v=6.6×10^-34/10^-10
    By solving u get the value of v
    V=0.725*10^7=7.25*10^6

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