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The kinetic energy of a neutron (m = 1.6...

The kinetic energy of a neutron (m = `1.67 xx 10^(-27)` kg) having a de-Broglie wavelength `lambda = 0.20` nm is:

A

`1.55 xx 10^(21)` J

B

`4.56 xx 10^(-21)` J

C

`3.28xx 10^(-21)` J

D

`2.54 xx 10^(-21)` J

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