Electromagnetic Radiation with a Wavelength of 745 Nm Appears as Red

question 61

Multiple Choice

Electromagnetic radiation with a wavelength of 745 nm appears as red light to the human eye.The energy of one photon of this light is ________ J.

• A) 1.48 × 10^-31
• B) 2.67 × 10^-28
• C) 2.67 × 10^-19
• D) 1.48 × 10^-22
• E) 3.75 × 10¹⁸

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