Question

Q14. 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 × 10-34 Js)​

Answer 1

Explanation:

this is the answer of this question

Answer 2

Given:- a body having mass= 10mg which is moving with velocity= 100 $ms^-1$.

To find:- we have to find the wavelength of de-Broglie wave =?.

de Broglie wavelength ( λ)=  $\frac{h}{mv}$

λ=$\frac{6.626 *10^{-34} }{10 *10^{-6}*100 }$

[ h=$6.626$×$10^{-3} J/Sec$ ; mass (m) = 10 mg =$10$×$10^{-6}$ kg ; velocity(v) =100m/sec]

on simplifying the above euation we will get the value of de Broglie wavelength.

∴ λ = $6.626$ × $10^{-31}$ m

Hence,The wavelength of de-Broglie wave associated with it = (λ) = 6.626 × $10^{-31}$ m.

Therefore,de-Broglie wavelength( λ)= 6.626 ×$10^{-31}$ m is the correct answer.