WorksheetsPhysics 4 Midterm Examination - Review
Total questions: 16
Worksheet time: 8mins
Which property is unique to waves and not explained by particles?
Reflection
Refraction
Diffraction
Transfer of energy
Which model best explains gas pressure in a container?
Wave model
Particle model
Photon model
Electromagnetic wave model
Which statement is true about photons?
They have mass but no charge.
They have charge but no mass.
They have both mass and charge.
They have neither mass nor charge.
What happens to photon energy as wavelength decreases?
Energy increases
Energy decreases
Energy stays the same
Energy oscillates
Which experiment first showed light behaves as a wave?
Photoelectric effect
Young’s double-slit experiment
Geiger counter clicks
Laser emission
Which unit is more convenient for measuring photon energies?
Joule
Newton
Electronvolt
Ampere
Photon energy is directly related to which property?
Mass
Wavelength
Charge
Volume
What is the photoelectric effect?
Emission of light from a metal when heated because of the electrons jumping
Ejection of electrons from a material when exposed to high-frequency light
Conversion of electricity into light
Movement of electrons in a circuit
The electrons released during the photoelectric effect are called:
Valence electrons
Conduction electrons
Neutrons
Photoelectrons
Which type of electromagnetic radiation can cause the photoelectric effect?
High-frequency light
Low-frequency light
Sound waves
Radio waves only
What must the frequency of light exceed to eject electrons?
Work function
Activation limit
Threshold frequency
Photon limit
A photon interacts with how many electrons in the photoelectric effect?
Many electrons
One electron only
Two electrons
None
Increasing the intensity of light increases:
The speed of emitted electrons
The energy of each electron
The number of emitted electrons
The work function
Which factor increases the energy of emitted electrons?
Intensity
Wavelength
Frequency
Brightness
Who explained the photoelectric effect using photons in 1905?
Bohr
Planck
Thomson
Einstein
How do the double-slit experiment and the photoelectric effect show that light behaves as both a wave and a particle?
They demonstrate both wave-like interference and particle-like energy transfer.
They show that light only behaves as a wave.
They prove that light is only a particle.
They indicate that light does not interact with matter.
