1.

A particle having rest mass m_(0) travel with speed of light in vaccum.Its de-Broglie wavelength will be…..

Answer»

`(h)/(m_(0)c)`
0
`oo`
`(m_(0)C)/(h)`

Solution :`LAMBDA=(h)/(mv)`
`lambda=(hxxsqrt(1-(v^(2))/(v^(2))))/(m_(0)v) THEREFORE m=(m_(0))/(sqrt(1-v^(2)/(c^(2))))`
`lambda=(hxxsqrt(1-c^(2)/(c^(2))))/(m_(0)v) therefore v=c`
`therefore lambda=0`


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