Question 1 of 25
2 points
what is the frequency of an electromagnetic wave with energy of 5.0 x 10-20
o a. 7.55 x 1013 hz
o b. 5.22 x 105 hz
o c. 3.98 x 10-6 hz
o d. 1.67 * 10-28 hz
sue

The frequency of an electromagnetic wave with energy 5.0 *10^-20 J is 7.55 * 10^13 Hz (option A)

Explanation:

Step 1: Data given

Energy = 5.0 *10^-20 J

Planck's cosntant = 6.626* 10^-34 m²kg/s

Step 2: Calculate the frequency

E = h*f

⇒ with E = the energy in joules = 5.0 * 10^-20 J

⇒ with h = Planck's constant = 6.626* 10^-34 m²kg/s

⇒ with f = the frequency (in Hz)

f = E/h

f = 5.0 * 10^-20 J/6.626* 10^-34 m²kg/s

f = 7.55 * 10^13 Hz

The frequency of an electromagnetic wave with energy 5.0 *10^-20 J is 7.55 * 10^13 Hz (option A)

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