Kuiz Fizik Tingkatan 5 Bab 7 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 7 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

Which of these scientists is credited with conducting the double-slit experiment in 1801, demonstrating that light behaves as a wave?

J. J. Thomson

Isaac Newton

Thomas Young

Max Planck

None

How does Niels Bohr's model of the atom explain the production of line spectra?

Electrons can orbit the nucleus at any distance with any energy.

The nucleus of the atom emits photons when it is excited.

Photons are emitted when electrons transition between discrete energy levels.

Electrons continuously radiate energy as they orbit the nucleus.

None

A black body is described as an ideal absorber and emitter of electromagnetic radiation. What determines the frequency (and color) of the radiation it emits?

Its size and shape

Its surface material

The frequency of the light it absorbs.

Its temperature

None

In the photoelectric effect, what happens if the intensity of the incident light is increased while the frequency remains the same (and above the threshold frequency)?

The number of photoelectrons emitted per second increases

No electrons are emitted, regardless of the intensity.

The maximum kinetic energy of the emitted photoelectrons increases.

The number of photoelectrons emitted per second increases

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Which phenomenon could not be explained by classical wave theory but was successfully explained by Max Planck's quantum theory?

The radiation spectrum of a black body.

The diffraction of light through a narrow slit.

The interference pattern from a double-slit experiment.

The reflection of light from a smooth surface.

None

Einstein's photoelectric equation is given by hf=W+K max . What does this equation represent?

The creation of energy from a photon.

The quantization of atomic energy levels.

The relationship between a particle’s momentum and its wavelength.

The law of conservation of energy for the photoelectric effect.

None

Albert Einstein expanded on Max Planck's quantum theory by proposing that light itself exists in discrete packets of energy. What are these packets called?

Electrons

Photons

Corpuscles

Quanta

None

According to the relationship E=hf, if the frequency of a light wave is doubled, what happens to the energy of a single photon of that light?

It is quadrupled

It is halved

It is doubled

It remains the same.

None

What is the relationship between the power (P) of a light source and the number of photons (n) it emits per second?

Power is equal to the number of photons emitted per second multiplied by the energy of each photon.

Power is the energy of a single photon divided by the number of photons.

Power is inversely proportional to the number of photons emitted.

Power is independent of the number of photons emitted.

None

10.

What is the 'work function' (W) in the context of the photoelectric effect?

The minimum energy required to release an electron from a metal surface.

The frequency of the incident light.

The total energy of the incident photon.

The kinetic energy of the emitted electron

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