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C(60) emerging from a source at a speed ...

`C_(60)` emerging from a source at a speed (v) has a de–Broglie wavelength of 11.0 Å. The value of v (in `ms^(-1)`) is closest to [Planck's constant h = `6.626xx10^(-34)Js`]

A

0.5

B

2.5

C

`5.0`

D

30

Text Solution

Verified by Experts

The correct Answer is:
A
`lamda=h/(mv)rArrv=h/(mlamda)`
`rArrv=(6.626xx10^(-34))/(12xx60xx1.66xx10^(-27)xx11xx10^(-10))`
(mass of `C_(60)=12xx60am u=12xx60xx1.66xx10^(-27)Kg`)
`rArrv=0.5ms^(-1)`.
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