Wave-particle Duality and Photoelectric effect

The wave-particle duality of light describes light as...

• a wave only
• a particle only
• both a wave and a particle
• neither a wave nor a particle

As the frequency of an electromagnetic wave increases, the amount of energy in that wave...

• increases.
• decreases.
• stays the same.

Wave particle duality concept proved

• Einstein's theory

• de Borglie's theory

• corpuscular theory

• Planck's theory

The photoelectric effect helped to explain how light was light a

• particle

• wave

The SI unit of frequency is the __________.

• meter

• second

• hertz

• meter per second

This image is an illustration of

• photoelectric effect
• Dalton's atomic theory
• Bohr model
• Quantum mechanical model

the energy of the photon is ---------------

• hf
• h/f
• hf + Φ
• hf - Φ

The energy of the emitted electron is ------------

• hf
• h/f
• hf + Φ
• hf - Φ

What does the letter 'h' represent in the formula E = hv?

• Planck's constant
• Hydrogen
• Energy

To release an electron the energy of the photon had to be more than

• zero

• the cut off frequency

• the work function

• the cut off wavelength