What is the frequency of a beam of light traveling through a vacuum with a wavelength of $5 \times 10^{- 4} m$ ? The speed of light in a vacuum is $3.00 \times 10^{8} m / s$ .
a $6.0 \times 10^{1 <} Hz$
b $6.0 \times 10^{π 1} Hz$
C $2.0 \times 10^{11} Hz$
d $2.0 \times 10^{12} Hz$
e $5.0 \times 10^{11} Hz$

Answer

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Answer

$f = 6.00 \times 10^{12} Hz$

Steps

Step 1 ： $f = \frac{c}{λ}$

Step 2 ： $f = \frac{3.00 \times 10^{8} m / s}{5 \times 10^{- 4} m}$

Step 3 ： $f = 6.00 \times 10^{12} Hz$