1.

The frequency of e.m. wave which is best suited to observe a particle of radius 3 xx 10^(-4) cm is of the order of :

Answer»

`10^(15)`
`10^(14)`
`10^(13)`
`10^(12)`

Solution :Radius of particle is `LAMBDA`
`:. v=(C)/(lambda)=(3 xx 10^(8))/(3 xx 10^(-6))=10^(14)`
For observation of particle the WAVE frequency should be more than `10^(14)` Hz, or wave length should be SMALLER.


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