Photoelectric Effect Quiz

Emission of light by electrons

Emission of electrons when light shines on a metal

Absorption of light by electrons

Emission of X-rays by metals

Valence electrons

Photoelectrons

Cathode rays

Alpha particles

Frequency of light

Type of metal

Intensity of light

Wavelength only

Peak frequency

Work function

Threshold frequency

Critical wave

Energy is continuous

Light acts as a wave

Energy is transferred in photons

Electrons are absorbed by light

The kinetic energy of an electron

The energy of a photon

The work function of a metal

The stopping voltage

Joules only

Electron volts (eV)

Newtons

Amperes

An electron is always emitted

The metal melts

No photoelectron is emitted

The electron speeds up

Increases the energy of each photoelectron

Increases the number of photoelectrons

Decreases the threshold frequency

Has no effect at all

Voltage that attracts photoelectrons

Voltage that removes electrons from the metal

Minimum voltage needed to emit photoelectrons

Voltage at which all photoelectrons are repelled