Light of a Given Wavelength Is Used to Illuminate the Surface

question 77

Multiple Choice

Light of a given wavelength is used to illuminate the surface of a metal,however,no photoelectrons are emitted.In order to cause electrons to be ejected from the surface of this metal you should

• A)use light of a longer wavelength.
• B)use light of a shorter wavelength.
• C)use light of the same wavelength but increase its intensity.
• D)use light of the same wavelength but decrease its intensity.

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A network of controlled-access highways that forms part of the National Highway System in the United States, designed for high-speed vehicular traffic.

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A state or county road that connects rural or agricultural areas to market towns or cities.

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A path or a roadway that is available for use by the general public and maintained by a public authority.