•Frequency below which no electrons are emitted from metal surface is

• angular frequency

• minimum frequency

• maximum frequency

• threshold frequency

Tags

NGSS.HS-PS4-4

Energy absorbed by electron is used in

• A) escaping the metal

• B)increasing kinetic energy

• C) both A and B

• D) increasing frequency

Tags

NGSS.HS-PS3-5

NGSS.HS-PS4-4

The graph shows maximum kinetic energy of emitted against frequency of incident light for a number of different metals. Plank’s constant is determined by:

• the x-intercept

• the Y-intercept

• the gradient

• the area under the graph

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

The graph shows maximum kinetic energy of emitted against frequency of incident light for a number of different metals. The work function is determined by:

• the X-intercept

• the Y-intercept

• the gradient

• the area under the graph

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

The graph shows maximum kinetic energy of emitted against frequency of incident light for a number of different metals. The threshold frequency is determined by:

• the X-intercept

• the-Y-intercept

• the gradient

• the area under the graph

The photoelectric effect is when:

• electrons collide inside a metal to release photons

• one incident metal electron releases one photon

• one incident photon releases one electron from a metal

• photons are absorbed in to metal ions releasing electrons

Tags

NGSS.HS-PS4-3

Which of the following is an example of light behaving like a particle?

• interference

• Doppler effect

• diffraction

• photoelectric effect

• refraction effect

Tags

NGSS.HS-PS4-3

The theory of wave-particle duality states that all matter has properties of

• •neither a particle nor a wave.

• •just a particle and not a wave.

• •just a wave and not a particle.

• •either a particle or a wave.

• •both a particle and a wave.

Tags

NGSS.HS-PS4-3

The ................................. ............................... is the minimum amount of energy required for an electron to be emitted from the surface of a metal plate.

A photon 11eV is incident on a metal which has a work function of 5eV. The max knetic energy of the photoelectrons is ......eV.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4