Question

velocity of a car is 1.3× 10⁴ gm weight is 1.0 × 10³ cm/sec. what is its wavelength in cm?
(h=6.63×10-²⁷ js)

(A)5×10-¹⁸
B) 5× 10-³⁸
c). 5× 10-³⁴
d) 5× 10-³⁸
​

Answer 1

Answer:

Explanation:

The de Broglie equations relate the wavelength λ to the momentum p, and frequency f to the total energy E of a particle: where h is Planck's constant.  

λ=  

mv

h

​

 

where,

m= mass=6.62∗10  

−26

Kg

h= Planck's constant=6.62∗10  

−34

m  

2

/Kg.s

v= velocity of particle=1000m/s

λ=  

1000×6.62×10  

−32

 

6.62×10  

−34

 

​

=10  

−5

m