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Which scientist first proposed that particles of matter could have wave properties?


A) Einstein
B) Planck
C) de Broglie
D) Compton
E) Heisenberg

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Infrared radiation from the sun has a wavelength of 6200 nm.Calculate the energy of one photon of that radiation.


A) 4.l ×\times 10-39 J
B) 4.l ×\times 10-30 J
C) 3.2 ×\times 10-29 J
D) 3.2 ×\times 10-26 J
E) between 10-20 and 10-19 J

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An infrared wave has a wavelength of 6.5 ×\times 10-4 cm.What is this distance in angstroms,Å?


A) 6.5 ×\times 10-4 Å
B) 2.2 ×\times 10-4 Å
C) 4.6 ×\times 103 Å
D) 6.5 ×\times 104 Å
E) 6.5 ×\times 106 Å

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If the energy of a photon is 1.32 ×\times 10-18 J,what is its wavelength in nm?


A) 1.50 ×\times 10-7 nm
B) 150.nm
C) 1.99 ×\times 1015 nm
D) 1.99 ×\times 1024 nm
E) None of these choices is correct.

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The Rydberg equation,giving the wavelengths of lines in the spectrum of the hydrogen atom,was obtained by assuming that energy is quantized.

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The energy of a photon is directly proportional to the wavelength of the radiation.

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According to the Rydberg equation,the longest wavelength (in nm) in the series of H-atom lines with N1 = 3 is


A) 1875 nm
B) 1458 nm
C) 820 nm
D) 656 nm
E) 365 nm

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The FM station KDUL broadcasts music at 99.1 MHz.Find the wavelength of these waves.


A) 1.88 ×\times 10-2 m
B) 0.330 m
C) 3.03 m
D) 5.33 ×\times 102 m
E) > 103 m

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Interference of light waves


A) separates light into its component colors.
B) creates a pattern of light and dark regions.
C) focuses a broad beam of light into a point.
D) bends light as it passes the edge of an object.
E) creates a laser beam.

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a.What is the frequency of microwave radiation which has a wavelength of 10.7 cm? b.What is the energy of one photon of this radiation?

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a.2.80 blured image 109

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In the quantum mechanical treatment of the hydrogen atom,the probability of finding an electron at any point is proportional to the wave function Ψ\varPsi .

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The size of an atomic orbital is associated with


A) the principal quantum number (n) .
B) the angular momentum quantum number (l) .
C) the magnetic quantum number (ml) .
D) the spin quantum number (ms) .
E) the angular momentum and magnetic quantum numbers,together.

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