1.

A student performs an experiment to observe photoelectric effect by shining light on a metal surface. The light source limits light of wavelength 450nm. The table given below lists the available metals and their corresponding work functions Metalϕ(ev)Tungsten4.5Lithium2.3Barium2.5Tantalum4.2 Which of the above metals can be used to produce electrons by the photoelectric effect from the given source of light?

Answer»

A student performs an experiment to observe photoelectric effect by shining light on a metal surface. The light source limits light of wavelength 450nm. The table given below lists the available metals and their corresponding work functions
Metalϕ(ev)Tungsten4.5Lithium2.3Barium2.5Tantalum4.2

Which of the above metals can be used to produce electrons by the photoelectric effect from the given source of light?




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