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 the following applications directly uses the photoelectric effect to generate an electric current from light?

Electron microscopes

Lasers

Electric bells

Solar cells

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 inversely proportional to the number of photons emitted.

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

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

Power is independent of the number of photons emitted.

None

The concept of wave-particle duality, introduced by Louis de Broglie, suggests that:

Only massless entities like photons can exhibit both wave and particle properties.

All particles can exhibit wave-like characteristics.

Wave properties and particle properties are mutually exclusive and can never be observed for the same entity.

Light behaves only as a wave, and particles like electrons behave only as particles.

None

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

The kinetic energy of the emitted electron

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

The total energy of the incident photon.

The frequency of the incident light.

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 surface material

Its temperature

The frequency of the light it absorbs.

Its size and shape

None

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

The law of conservation of energy for the photoelectric effect.

The quantization of atomic energy levels.

The creation of energy from a photon.

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

None

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

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

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

Electrons continuously radiate energy as they orbit the nucleus.

Photons are emitted when electrons transition between discrete energy levels.

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 doubled

It is quadrupled

It remains the same.

It is halved

None

A key feature of the photoelectric effect is that photoelectrons are emitted almost instantaneously when light shines on the metal (if f>f 0). Why did this observation conflict with classical wave theory?

Classical theory predicted that electrons would be emitted randomly, not instantaneously.

Classical theory predicted that only very high-frequency light could ever cause emission.

Classical theory predicted that it would take time for an electron to absorb enough energy from a continuous wave to be ejected.

Classical theory predicted that no electrons would be emitted at all.

None

10.

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

Isaac Newton

J. J. Thomson

Max Planck

Thomas Young

None

1 out of 10