दिया है : `k = 1*38 xx 10^(-23)" JK"^(-1)`
`K.E. = 3/2 "k.T."`
`:." "lamda = h/sart(2m xx 3/2 xx "k.T.")`
`= h/sqrt(3m xx "k.T.")`
`= (6*63 xx 10^(-34))/sqrt(3xx1*677xx 10^(-27)xx 1*38 xx 10^(-23)xx300)`
`=(6*63 xx 10^(-10))/(4*56)m`
`= (6*63xx10^(-10))/(4*56)m`
` = 1*45 xx 10^(-10)m`
` = 0*145 m `