Dual Nature of Light

In photoelectric effect, which condition will produce a greater flow of electrons (photoelectric current)?

• bright light

• dim light

• reflected light

• refracted light

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Which of the following devices operates under the principle of photoelectric effect?

• solar panels

• voltaic cells

• transistors

• vacuum tubes

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The energy of photoelectrons emitted from a metal surface can be increased by ___________________________.

• using light of higher frequency.

• using light of longer wavelength.

• using light of higher intensity.

• using monochromatic, polarized light.

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This image is an illustration of

• photoelectric effect

• diffraction effect

• particle interference effect

• wave interference effect

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Refraction of light is evidence that ___________.

• the nature of light is unknown

• light is both a particle and a wave

• light is a particle phenomenon

• light is a wave phenomenon

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Interference of light is evidence that ___________.

• the nature of light is unknown

• light is both a particle and a wave

• light is a particle phenomenon

• light is a wave phenomenon

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Which experiment demonstrated the wave nature of light?

• Young's double-slit experiment

• Rutherford's gold foil experiment

• Millikan's oil drop experiment

• Cavendish experiment

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What phenomenon demonstrates the particle nature of light?

• Photoelectric effect

• Diffraction

• Interference

• Polarization

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Which scientist is credited with the theory of wave-particle duality?

• Albert Einstein

• Niels Bohr

• Louis de Broglie

• Isaac Newton

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In the photoelectric effect, what happens when light of a higher frequency is used?

• More electrons are emitted

• Electrons are emitted with more energy

• Fewer electrons are emitted

• Electrons are emitted with less energy

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