A body of mass 10 mg is moving with a velocity of 100 ms-1 . The wavelength of de-Broglie wave associated with it would be (Note: h = 6.63 × 10-34Js)

Question

A body of mass 10 mg is moving with a velocity of 100 ms-1 . The wavelength of de-Broglie wave associated with it would be (Note: h = 6.63 × 10-34Js) (A) 6.63 × 10-37m (B) 6.63 × 10-31m (C) 6.63 × 10-34m (D) 6.63×10-35

Tardigrade Admin · Accepted Answer

m = 10 mg = 10 ×10-6 kg v = 100 ms-1 λ = (h/mv) = (6.63 ×10-34/10 ×10-6 ×100) = 6.63 ×10-31 m

Q. A body of mass $10 m g$ is moving with a velocity of $100 m s^{- 1}$ . The wavelength of de-Broglie wave associated with it would be
(Note : $h = 6.63 \times 1 0^{- 34} J s)$

$6.63 \times 1 0^{- 37} m$

$6.63 \times 1 0^{- 31} m$

$6.63 \times 1 0^{- 34} m$

$6.63 \times 1 0^{- 35}$

$m = 10 m g = 10 \times 1 0^{- 6} k g$

$v = 100 m s^{- 1}$

$λ = \frac{h}{m v} = \frac{6.63 \times 1 0 ^{- 34}}{10 \times 1 0 ^{- 6} \times 100}$

$= 6.63 \times 1 0^{- 31} m$

Q. A body of mass 10mg is moving with a velocity of 100ms−1 . The wavelength of de-Broglie wave associated with it would be (Note : h=6.63×10−34Js)

6.63×10−37m

6.63×10−31m

6.63×10−34m

6.63×10−35