What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10 m s-1 ?

Question

What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10 m s-1 ? (A) 5.625 × 10-24 m-1 (B) 5.625 × 1034 m (C) 6.626 × 10-34 m (D) 66.26 × 1024 m-1

Tardigrade Admin · Accepted Answer

According to de Broglie equation, λ = (h/mv)= (6.626 ×10-34Js/0.1 kg ×10 ms-1) = 6.626 × 10-34 m (J = kg m2 s-2)

Q. What will be the wavelength of a ball of mass $0.1 k g$ moving with a velocity of $10 m s^{- 1}$ ?

$5.625 \times 1 0^{- 24} m^{- 1}$

$5.625 \times 1 0^{34} m$

$6.626 \times 1 0^{- 34} m$

$66.26 \times 1 0^{24} m^{- 1}$

According to de Broglie equation,
$λ = \frac{h}{m v} = \frac{6.626 \times 1 0 ^{- 34} J s}{0.1 k g \times 10 m s ^{- 1}}$
$= 6.626 \times 1 0^{- 34} m (J = k g m^{2} s^{- 2})$

Q. What will be the wavelength of a ball of mass 0.1kg moving with a velocity of 10ms−1 ?

5.625×10−24m−1

5.625×1034m

6.626×10−34m

66.26×1024m−1