What Is the Wavelength of a Monochromatic Light Beam,where the Photon

question 63

Multiple Choice

What is the wavelength of a monochromatic light beam,where the photon energy is 2.15 eV? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 nm = 10−⁹ m,and 1 eV = 1.6 × 10−¹⁹ J)

• A)308 nm
• B)578 nm
• C)223 nm
• D)156 nm
• E)​475 nm

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