What is the wavelength (in m ) of a particle of mass 6.62 × 10-29 g moving with a velocity of 103 ms -1 ?

Question

What is the wavelength (in m ) of a particle of mass 6.62 × 10-29 g moving with a velocity of 103 ms -1 ? (A)  6.62× 10-4 (B)  6.62× 10-3 (C) 10-5 (D) 105

Tardigrade Admin · Accepted Answer

According to de-Broglie equation λ =(h/m v) =(6.62 × 10-34/6.62 × 10-29 × 10-3 × 103) =10-5 m

Q. What is the wavelength (in $m$ ) of a particle of mass $6.62 \times 1 0^{- 29} g$ moving with a velocity of $1 0^{3} m s^{- 1} ?$

$6.62 \times 1 0^{- 4}$

$6.62 \times 1 0^{- 3}$

$1 0^{- 5}$

$1 0^{5}$

According to de-Broglie equation
$λ = \frac{h}{m v}$
$= \frac{6.62 \times 1 0 ^{- 34}}{6.62 \times 1 0 ^{- 29} \times 1 0 ^{- 3} \times 1 0 ^{3}}$
$= 1 0^{- 5} m$

Q. What is the wavelength (in m ) of a particle of mass 6.62×10−29g moving with a velocity of 103ms−1?

6.62×10−4

6.62×10−3

10−5

105