Question

Q40 The mass of an electron is 9.1 x 10-31 kg. If its K.E. is 3.0 x 10-25). Calculate its wavelength. O 600 nm O 500 nm O 900 nm 300 nm​

Answer 1

Answer:

Answer

λ=h/(2mK.E)

1/2

λ=6.626×10

−34

/(2×9.1×10

−31

×3×10

−25

)

1/2

=1.2×10

−7

m