The de-Broglie wavelength associated with a ball of mass 1 kg having kinetic energy 0.5 J is

Question

The de-Broglie wavelength associated with a ball of mass 1 kg having kinetic energy 0.5 J is (A) 6.626 × 10-34 m  (B) 13.20 × 10-34 m (C) 10.38 × 10-29 m (D) 6.626 × 10-34 mathringA

Tardigrade Admin · Accepted Answer

λ=( h / mv )=( h /√2 mE ) =(6.6 × 10-34/√2 × 1 × 0.5) =6.6 × 10-34 m

Q. The de-Broglie wavelength associated with a ball of mass $1 k g$ having kinetic energy $0.5 J$ is

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

$13.20 \times 1 0^{- 34} m$

$10.38 \times 1 0^{- 29} m$

$6.626 \times 1 0^{- 34} \overset{˚}{A}$

$λ = \frac{h}{m v} = \frac{h}{2 m E}$
$= \frac{6.6 \times 1 0 ^{- 34}}{2 \times 1 \times 0.5}$
$= 6.6 \times 1 0^{- 34} m$

Q. The de-Broglie wavelength associated with a ball of mass 1kg having kinetic energy 0.5J is

6.626×10−34m

13.20×10−34m

10.38×10−29m

6.626×10−34A˚