1)Calculate the wavelength (in nm) of a photon whose energy is 2
eV. 2)Also calculate the...
1)Calculate the wavelength (in nm) of a photon whose energy is 2
eV. 2)Also calculate the wavelength (in nm) of a free electron
moving with a kinetic energy of 2 eV.
Solutions
Expert Solution
Hence the wavelength of electron with kinetic energy 2 eV is
0.87 nm. (approximately)
A. Determine the wavelength of a photon (in nm) whose
energy per photon is 2.73 x 10-19
J.
B. Consider the reaction equation for combustion of
C6H8O2. What is the sum of the
coefficients for the products?
C. Calculate the energy (kJ/mol) of photons of
wavelength 615 nm.
D. Determine the energy of a photon (in Joules) whose
frequency is 6.181 x 1015 Hz.
Calculate the energy (in joules) of
(a)a photon with a wavelength of 5.00 × 104 nm (infrared region)
and
(b)a photon with a wavelength of 52 nm (ultraviolet region).
(c)Calculate the kinetic energy of an electron ejected by the
photon in part (b) from a metal with a binding energy of 3.7
eV.
Calculate the photon energy and wavelength for the n = 4 to n =
2 transition and n = 4 to n = 3 transition for the hydrogen atom, H
(Z = 1). Do not include uncertainty.
E ( 5--> 3) =
E ( 5 --> 2 ) =
λ ( 5--> 3 ) =
λ ( 5 --> 2) =
Calculate the energy of the emitted photon as well as the
wavelength and frequency of electromagnetic radiation emitted from
the hydrogen atom when the electron undergoes the transition from n
= 5 to n = 4.
An atom in an l=1 state emits a photon of wavelength 500.000 nm
as it drops to an l=0 state when there is no external magnetic
field.
a)Calculate the Zeeman effect splitting (in electron volts)
between adjacent energy levels when this atom is placed in an
external3.00-Tmagnetic field. (eV)
b) List the wavelengths of the 3 spectral lines that could be
observed with a high-resolution spectrographas a result of the
interaction of the atom with the B field. Hint: you...
4. Find the wavelength of radiation whose photons have energy
equal to 1.4 eV.
i. 0.34 ?m
ii. 0.89 ?m
iii. 1.2 ?m
iv. 1.7 ?m
5. Explain (in words, not equations) what the Betz limit is and how
it is derived.
Be sure to answer all parts.
Calculate the wavelength (in nm) of light with energy 1.89
×10−20 J per photon.
..............nm
For light of wavelength 460 nm, calculate the number of photons per
joule.
.........× 10^...... ( photons/J Enter your answer in
scientific notation.)
Determine the binding energy (in eV) of a metal if the kinetic
energy possessed by an ejected electron (using one of the photons
with wavelength 460 nm) is 2.58 ×10−19 J.
.............. eV
One photon of a certain light has an energy of 3.8e-19J.Calculate the wavelength of the light. 195.511e-9 m521.053e-9 m594.752e-9 m260.699e-9 m900.776e-9 mThe refractive index of a certain medium is 1.21.Calculate the speed of light in the medium. 4.411e8 m ⁄ s4.693e8 m ⁄ s1.955e8 m ⁄ s2.479e8 m ⁄ s3.985e8 m ⁄ s