Question

The mass of a particle is 1 mg and its velocity is 4.5 into 10 to 5 what should be the wavelength of this particle if h is 6.65 into 10 raid to power minus 27 erg

Answer 1

λ=

mv

h

​

Here,

v=3600km/h=10

5

cm/s;m=1.0;mg=10

−3

g

λ=

10

−3

×10

5

6.626×10

−27

​

=6.626×10

−29

cm

Hence, option B is correct.