Photoelectric Effect

What is the threshold frequency in the context of the photoelectric effect?

• The minimum frequency of light required to emit electrons from a metal surface.

• The maximum frequency of light that can be absorbed by a metal.

• The frequency at which light is reflected from a metal surface.

• The frequency at which the intensity of light is maximum.

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What is the work function in the context of the photoelectric effect?

• The energy required to remove an electron from the surface of a metal.

• The energy required to heat a metal to emit electrons.

• The energy required to reflect light from a metal surface.

• The energy required to change the frequency of incident light.

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What is the unit of the work function in the context of the photoelectric effect?

• Joules

• Watts

• Newtons

• Volts

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If the work function of a metal is 2 eV and the incident light has a frequency corresponding to 3 eV, what is the maximum kinetic energy of the emitted electrons?

• 1 eV

• 2 eV

• 3 eV

• 5 eV

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The emission of electrons from a metal when light shines on the metal → photoelectric effect

• true

• false

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the minimum frequency for which the photoelectric effect can occur is called the

• absolute frequency

• cut off frequency

• Lyman frequency

• threshold frequency

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When light of specific frequencies is shined on a surface, electrons are ejected from the surface. This is the idea behind...

• Quantization of Energy

• Photoelectric Effect

• Compton Effect

• deBroglie Waves

• Uncertainty Principle

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What is the photoelectric effect?

• The emission of electrons from a metal surface when light shines on it.

• The absorption of light by a metal surface.

• The reflection of light from a metal surface.

• The transmission of light through a metal surface.

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Which scientist is credited with explaining the photoelectric effect?

• Albert Einstein

• Isaac Newton

• Niels Bohr

• James Clerk Maxwell

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What happens to the kinetic energy of emitted electrons if the frequency of incident light is increased, assuming it is above the threshold frequency?

• It increases.

• It decreases.

• It remains the same.

• It becomes zero.

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