3. What is the wavelength of radiation that has a frequency of 2.10 *10^14 s^–1?
A) 6.30 *10^22 m D) 1.43 *10^–6 m
B) 7.00  102
nm E) 3.00  108 m
C) 7.00  105 m
4. Calculate the frequency of visible light having a wavelength of 486 nm.
A) 2.06  10^14 /s D) 1.20  10^–15 /s
B) 2.06 10^6/s E) 4.86  10^–7/s
C) 6.17  10^14 /s

Question

3. What is the wavelength of radiation that has a frequency of 2.10 *10^14 s^–1?
A) 6.30 *10^22 m D) 1.43 *10^–6 m
B) 7.00  102
nm E) 3.00  108 m
C) 7.00  105 m
4. Calculate the frequency of visible light having a wavelength of 486 nm.
A) 2.06  10^14 /s D) 1.20  10^–15 /s
B) 2.06  10^6/s E) 4.86  10^–7/s
C) 6.17  10^14 /s

jonm111 · Answer

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jonm111 · Answer

oh god is it as simple as speed of light/ 2.10 * 10^14?

harman.singh · Answer

You can use the following formula to calculate either the frequency or the velocity:
$$c=f \lambda $$
- c is the speed of light (3e8 m/s)
- f is the frequency
- lambda (the Greek letter) is the wavelength

harman.singh · Answer

Oh I didn't see your reply. Glad you worked it out :)

jonm111 · Answer

i got d for the first one, now for the second one I believe we have to convert from nm to m then use the formula

harman.singh · Answer

D would be correct for the first one.

Yes, you will have to convert nm to m first.

1 nm. = 1e-9  m.

jonm111 · Answer

C for the next question, bleh this was to simple, thanks :)

harman.singh · Answer

My pleasure!