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Question #36f26

1 Answer

Oct 4, 2017

$6.17 \cdot 10^{5} GHz$ $6.17*10^5 "GHz"$

Explanation:

We don't really need to know plank's constant over here.

$λ = \frac{speed}{frequency} = \frac{c}{v}$ $lambda="speed"/"frequency"=c/v$
$\Rightarrow v = \frac{c}{λ}$ $=>v=c/lambda$

$486 n m = 4.86 \cdot 10^{- 7} m$ $486 nm=4.86*10^-7 m$

So, $v = \frac{3 \cdot 10^{8} \frac{m}{s}}{4.86 \cdot 10^{- 7} m}$ $v= (3*10^8m/s)/(4.86*10^-7m)$

$= 6.17 \cdot 10^{14} H z OR 6.17 \cdot 10^{5} G H z$ $=6.17*10^14 Hz " OR "6.17*10^5 GHz$

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