quantum physics

What's the name of the infamous experiment in Quantum Physics?

• Double-Split Experiment

• One-Slit Experiment

• Double-Decker Experiment

• Double-Slit Experiment

When the top of one wave meets the bottom of another wave, they...

• call each other out.

• cancel each other out.

• cancel each other off.

• don't cancel each other out.

An Interference Pattern appears when...

• two particles interact with each other.

• waves interact with particles.

• two waves interact with each other.

• particles interact with particles.

What does the observer do?

• The observer collapses the wave function into particle.

• The observer collapses the particle into a wave function.

• The observer collapses the whole system simply by observing.

• The observer collapses the wave function into a wave.

What are undulations of waves?

• Left and right movements.

• Up and left movements.

• Down and right movements.

• Up and down movements.

Photoelectrons will be ejected from a material surface if?

• The threshold frequency is greater than the photon frequency

• The work function is less than the photon energy

• The intensity of light is high enough

• The wavelength of photon is maximum

In an experiment, photoelectric effect is observed in metal A when light with frequency (f ) falls on the metal. If the light frequency used in this experiment is doubled, the photoelectrons

• Will not be ejected

• Will be ejected as observed in the previous

• Will be ejected with greater number of photoelectrons

• Will be ejected with greater kinetic energy

A metal surface is struck with light of λ = 400 nm, releasing a stream of electrons. If the 400 nm light is replaced by λ= 300 nm light of the same intensity, what is the result?

• More electrons are emitted in a given time interval

• Fewer electrons are emitted in a given time interval

• Emitted electrons are more energetic

• Emitted electrons are less energetic

A metal surface is struck with light of λ = 400 nm, releasing a stream of electrons. If the light intensity is increased (without changing λ ), what is the result?

• More electrons are emitted in a given time interval

• Fewer electrons are emitted in a given time interval

• Emitted electrons are more energetic

• Emitted electrons are less energetic

True or False? The wavelength and frequency of all waves are inversely proportional to each other.

• True

• False