- 1.989?10?16 J
- 1.989?10?17 J
- 1.989?10?18 J
- 1.989?10?19 J
Category: Chemistry
- Electrons are still ejected, but slowly.
- Electrons are ejected only if the intensity is very high.
- No electrons are ejected.
- The work function becomes zero.
- 10?20 J to 10?18 J
- 10?19 J to 10?19 J (a narrow range)
- 10?15 J to 10?13 J
- 10?25 J to 10?23 J
- Higher frequency light ejects more electrons.
- Higher frequency light ejects electrons with higher KE.
- Lower frequency light ejects more electrons.
- Lower frequency light ejects electrons with higher KE.
- The alarm sounds when photons are detected.
- The alarm sounds when electrons are ejected.
- The alarm sounds when a light beam is broken, stopping electron flow.
- The alarm sounds when the temperature changes.
- Only the frequency of incident light.
- Only the intensity of incident light.
- Both frequency and intensity.
- The duration of light exposure.
- Blackbody radiation.
- Compton effect.
- Photoelectric effect.
- Pair production.
- Energy in the form of photons.
- A new, heavier particle.
- A new, lighter particle.
- Nothing.
- m=E/c2
- m=Ec2
- m=E/c
- m=Ec
- Creates a proton-electron pair.
- Ejects an electron, creating current.
- Increases the temperature of the material.
- Generates a magnetic field.
- To generate heat.
- To convert light into electrical signals.
- To reflect light.
- To amplify light.
- Different photon energies.
- Different photon speeds.
- Different photon masses.
- Different photon charges.
- Continuous.
- Quantized.
- Random.
- Always zero.
- Excitation.
- Ionization.
- De-excitation.
- Fusion.
- It has mass, but no charge.
- It has charge, but no mass.
- It has no mass and no charge.
- It has both mass and charge.
- Photoelectric effect.
- Compton effect.
- Pair production.
- Annihilation.
- Photoelectric effect.
- Compton scattering.
- Pair production.
- Bremsstrahlung.
- They have higher energy.
- They have lower frequency.
- They are larger.
- They are charged.
- Compton scattering.
- Photoelectric effect.
- Pair production.
- Rayleigh scattering.
