piece of metal just starts ejecting electrons when photons of wavelength of 200 nm strike its surface. If photons of wavelength larger than 200 nm strike the same metal surface, no electrons are ejected. a) What is the reason behind this phenomenon? Explain. b) What is the frequency of photons corresponding the given wavelength? c) What will the

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Chapter1: Units, Trigonometry. And Vectors
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A piece of metal just starts ejecting electrons when photons of wavelength of 200 nm strike its surface. If photons of wavelength larger than 200 nm strike the same metal surface, no electrons are ejected.

a) What is the reason behind this phenomenon? Explain.

b) What is the frequency of photons corresponding the given wavelength?

c) What will the kinetic energy of the ejected electrons?

d) Calculated the work function of the metal.

e) What will happen to the kinetic energy of the ejected electrons if the frequency of the striking photons is increased?

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