1.

A body of mass x g is moving with a velocity of 100m/s. It de Broglie wavelength is 6.62xx10^(-35)m. Hence x is (h=6.62xx10^(-34)J-s)

Answer»

0.25 kg
0.15 kg
0.2 kg
0.1 kg

Solution :`lamda=h/(mv)`
`6.62xx10^(-35)=(6.62xx10^(-34))/(x XX 100)`
or `x=10^(-1)kg=0.1kg`


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