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WorksheetsSpectra Year 13 Physics
Total questions: 15
Worksheet time: 30mins
With an atom, an electron with zero energy is...
In the lowest energy level
In the highest energy level
Free from the atom
When an electron moves from a lower to a higher energy state, it is....
excited
transported
raised
lowered
An electron with the most negative value within an atom is known as the...
ground state
lowest electron
negative state
electron state
An atom has energy levels at E = -13.6 eV, -3.40 eV, and -1.51 eV. Which of these energies can a bound electron have?
-13.6 eV
-3.40 eV
-1.51 eV
-4.91 eV
-6.80 eV
Why are do energy levels have negative values?
(Choose all true answers)
Because external energy is required to free the electron
Shows that electrons are trapped/bound within the atom
Because electrons are negatively charged
Because the maximum energy is minus infinity
When an electron moves from a higher to a lower energy level, which of these occurs?
A photon is emitted
A photon is absorbed
An electron is emitted
An electron is absorbed
An electron moves from energy level of -1.51eV to an energy level of -3.40 eV. What is the energy of the photon is emitted?
1.89 eV
1.51 eV
3.40 eV
4.91 eV
No photon is emitted
What is the frequency of a 1.89 eV photon?
Give answer in Hz (don't include units), to 3 s.f., using e notation.
(a)
What is the wavelength of a 1.89 eV photon?
Give answer in m (don't include units), to 3 s.f., using e notation.
(a)
Which type of spectra is this?
Continuous
Emission
Absorption
Which type of spectra is this?
Continuous
Emission
Absorption
Which type of spectra is this?
Continuous
Emission
Absorption
A black body...
(Choose all that are true)
is a black object
is an object that reflects all EM radiation
is an object that absorbs all EM radiation
emits a characteristic distribution of wavelengths at a specific temp
is an idealised object
Wein's Law states that the maximum wavelength emitted from an object and its temperature...
are directly proportionally
are inversely proportionally
follow an inverse square law
are not related
The luminosity of a star is directly proportional to its...
(Choose all that are true)
radius
radius squared
surface absolute temperature
surface area
mass
