Summative Test in General Physics 2

What happens when an excited electron in an atom returns to a lower energy level?

• It loses its charge

• It absorbs energy from its surroundings

• It remains at the higher energy level indefinitely

• It emits energy in the form of electromagnetic radiation

Which of the following statements best describes atomic emission spectra?

• They consist of discrete lines of colors and are produced when electrons emit energy.

• They consist of continuous bands of colors and are produced when electrons absorb energy.

• They consist of dark lines against a bright background and are produced when electrons emit energy.

• They consist of bright lines against a dark background and are produced when electrons absorb energy.

What causes the characteristic pattern of lines in an atomic emission spectrum?

• The scattering of light by electrons

• The collision of atoms with each other

• The absorption of photons by electrons

• The emission of photons by electrons transitioning between energy levels

Atomic absorption spectrum is produced when

• Electrons in an atom scatter light.

• Electrons in an atom collide with each other.

• Electrons in an atom emit energy and transition to lower energy levels.

• Electrons in an atom absorb energy and transition to higher energy levels.

What property of atoms determines the specific wavelengths of light that are absorbed or emitted?

• Atomic mass

• Electron configuration

• Atomic radius

• Atomic number

How does the strength of an induced electric field vary with time?

• It remains constant.

• It decreases linearly.

• It oscillates sinusoidally.

• It varies depending on the specific circumstances.

What is the primary source of energy for induced electric fields?

• Chemical energy

• Mechanical energy

• Magnetic energy

• Gravitational energy

Which of the following statements is true regarding the direction of induced electric fields?

• They are independent of the change in magnetic flux.

• They point perpendicular to the direction of the magnetic field.

• They always point in the same direction as the change in magnetic flux.

• They always point in the direction opposite to the change in magnetic flux.

What happens to an induced electric field if the rate of change of magnetic flux through a loop increases?

• The induced electric field weakens.

• The induced electric field strengthens.

• The induced electric field remains constant.

• The induced electric field reverses direction.

What is the principle behind Faraday's Law of electromagnetic induction?

• The induced electric field is proportional to the rate of change of electric flux.

• The induced electric field is proportional to the rate of change of magnetic flux.

• The induced electric field is proportional to the rate of change of gravitational flux.

• The induced electric field is proportional to the rate of change of magnetic permeability.