Photons of Visible Wavelengths Are Shone on a Surface Starting

question 56

Multiple Choice

Photons of visible wavelengths are shone on a surface starting with one end of the spectrum and gradually proceeding to the other end. When 589 nm is reached, electrons start coming out of the surface. Which of the following is true?

• A)The spectrum scan started at the blue end.
• B)Electrons would not be ejected at this wavelength for any material.
• C)The spectrum scan started at the red end.
• D)The spectrum scan could have started at either end.
• E)none of the above

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