Photoelectric Effect Article

What phenomenon did Heinrich Hertz discover in 1887 when he shone ultraviolet light onto a metal plate?

• Photoelectric effect

• Electromagnetic induction

• Black body radiation

• Quantum entanglement

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Understanding

What problem did Max Plank solve in 1905?

• Black Body Radiation

• Quantum Field Theory

• General Relativity

• Special Relativity

What was the key contribution of Max Planck's work to Einstein's theory of the photoelectric effect?

• Introduction of the concept of quanta

• Discovery of electromagnetic waves

• Development of the theory of relativity

• Invention of the light bulb

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Understanding

Which observation about the photoelectric effect was NOT mentioned in the text?

• Brighter light produced more electrons

• Different metals required different minimum frequencies

• Higher frequency light produced higher energy electrons

• The effect only worked with gold metals

What puzzled scientists about the photoelectric effect?

• Metals could not conduct electricity

• Light could not produce electrons

• Increasing brightness only increased electron quantity, not energy

• The effect did not work with ultra violet light

What first interested Einstein's interest in science?

• A physics textbook

• A magentic compass

• A ultraviolet light

• A metal plate experiment

What did Heinrich Hertz discover in 1887?

• Metal plates conduct electricity

• Ultraviolet light could cause metal plates to emit sparks

• Light had different frequencies

• Metals contained loose electrons

Why did Einstein's parents initially think he was "slow"?

• He could not read or write

• He failed physics

• He spoke hesitantly and had average grades

• He could not understand basic math

How did increasing the frequency of light affect electron emission?

• It decreased the number of electrons

• It only increases the number, not the energy of electrons

• It has no effect on the electrons

• It produced higher energy electrons

Which scientist is NOT mentioned in the article?

• Maxwell

• Planck

• Einstein

• Hertz

• Heisenberg