PHOTOELECTRIC EFFECT

The relationship between frequency of light and the energy of a photon can be described by the equation __________.

E = hf

The minimum amount of energy required to release an electron from a metal is called the __________.

work function

Below a certain frequency known as __________, no photoelectrons are emitted when light shines on a metal surface.

threshold frequency

When light strikes a metal surface and has enough energy, it can cause the emission of __________.

photoelectrons

The formula used to express the energy of a photon is __________.

E = hf

Increasing the intensity of monochromatic light increases the number of photons emitted, not the __________ each photon carries.

amount of energy

Planck's constant (h) is approximately __________.

6.63 x 10^-34 Js

When photons with frequency greater than the threshold frequency strike a metal, they can give __________ to the electrons.

kinetic energy

The __________ model of light failed to explain the photoelectric effect, including maximum kinetic energy and threshold frequency.

classical wave

Each photon is absorbed by a __________, which can be ejected if the energy is sufficient.

single electron

The __________ can be calculated using the equation hf = work function at the threshold frequency.

threshold frequency

In Millikan’s experiment, emitted electrons were moving against an electric field, meaning energy was transformed from __________ to electric potential.

kinetic energy

Light exhibits both __________ and particle properties as described by the wave-particle duality concept.

wave

The experiment aimed to investigate the relationship between the frequency and maximum __________ of emitted photo-electrons.

kinetic energy

Hot objects emit radiation that is __________ to their temperature in the context of black body radiation.

proportionate

What is the photoelectric effect?

The photoelectric effect is the emission of electrons from a material when it is exposed to light of sufficient frequency.

How does increasing light intensity affect photoelectron emission?

Increasing light intensity results in a greater number of emitted photoelectrons, but does not increase their energy.

What is the significance of threshold frequency in the photoelectric effect?

Threshold frequency is the minimum frequency of light needed to emit electrons from a metal surface.

What role does Planck's constant play in photonics?

Planck's constant relates the energy of a photon to its frequency, described by the equation E = hf.

How can the kinetic energy of emitted photoelectrons be calculated?

The kinetic energy of emitted photoelectrons can be calculated using KE = hf - work function.

What happens to electrons when photons with energy greater than the work function hit a metal?

Electrons gain kinetic energy and can be ejected from the metal surface.

What does the emission of photoelectrons indicate about the nature of light?

The emission of photoelectrons provides evidence that light has particle-like properties.

Explain the concept of wave-particle duality.

Wave-particle duality is the principle that light exhibits both wave-like and particle-like behaviors.

What is the work function of a material?

The work function is the minimum energy required to remove an electron from the surface of a material.

What does Millikan's oil drop experiment illustrate?

Millikan's oil drop experiment illustrates the quantization of electric charge and the photoelectric effect.