What is its wavelength in
78. TI
+
64. The energy of an electromagnetic radiation is 3x10'ergs.
nanometers? (h = 6.625x102'erg.sec; c = 3x10cm.sec*')
65. The energy of an electromagnetic radiation is 19.875x10"
1) 400
2) 228.3
3) 3000
4) 662.5
ergs. What is the wave number
79. 1
t
-19 1
Answers
Answer:
The energy carried by any wave is proportional to its amplitude squared. For electromagnetic waves, this means intensity can be expressed as [latex]{I}_{\text{ave}}=\frac{{\mathrm{c\epsilon }}_{0}{E}_{0}^{2}}{2}\\[/latex], where I ave is the average intensity in W/m 2, and E 0 is the maximum electric field strength of a continuous sinusoidal wave.
Explanation:
The wavelength of an argon laser's output is 488.0 nm. Calculate the frequency of this wavelength of electromagnetic radiation. Solution: 1) Convert nm to m: 488 nm x (1 m / 10 9 nm) = 4.88 x 10¯ 7 m 2) Substitute into λν = c: (4.88 x 10¯ 7 m) (x) = 3.00 x 10 8 m s¯ 1. x = 6.15 x 10 14 s¯ 1
The energy associated with a single photon is given by E = h ν, where E is the energy (SI units of J), h is Planck's constant (h = 6.626 x 10 –34 J s), and ν is the frequency of the radiation (SI units of s –1 or Hertz, Hz) (see figure below). Frequency is related to wavelength by λ = c / ν, where c, the speed of light, is 2.998 x 10 8 ...