Physics Exam 4: Laser Safety Questions
and Verified Answers | Latest Update
Laser - ✔✔A device that emits a highly controlled continuous beam of coherent,
monochromatic light.
Light amplification by stimulated emission of radiation - ✔✔LASER
Energy levels - ✔✔Specific levels in an atom or molecule where electrons can
occupy and jump between.
Photon - ✔✔A particle of light emitted when an electron drops to a lower
energy level in an atom.
Monochromatic - ✔✔Having only one wavelength of light.
Coherent - ✔✔Oscillating in the same phase, with all photons moving together.
Collimated - ✔✔A narrow, parallel beam of light that can be directed precisely.
Ground state - ✔✔The lowest energy level that an electron can occupy in an
atom or molecule.
Thermal effects - ✔✔Effects caused by the absorption of laser light by tissue,
resulting in heat.
Page 1 of 4
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
and Verified Answers | Latest Update
Laser - ✔✔A device that emits a highly controlled continuous beam of coherent,
monochromatic light.
Light amplification by stimulated emission of radiation - ✔✔LASER
Energy levels - ✔✔Specific levels in an atom or molecule where electrons can
occupy and jump between.
Photon - ✔✔A particle of light emitted when an electron drops to a lower
energy level in an atom.
Monochromatic - ✔✔Having only one wavelength of light.
Coherent - ✔✔Oscillating in the same phase, with all photons moving together.
Collimated - ✔✔A narrow, parallel beam of light that can be directed precisely.
Ground state - ✔✔The lowest energy level that an electron can occupy in an
atom or molecule.
Thermal effects - ✔✔Effects caused by the absorption of laser light by tissue,
resulting in heat.
Page 1 of 4
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
