WorksheetsFrequency, Wavelength, and Bohr Models
Total questions: 12
Worksheet time: 9mins
Name
Class
Date
1.
Red light has a wavelength of 675 nm. What is its frequency?
a)
2.03x1011 m
b)
4.44x1014 Hz
c)
4.44x1014 nm
d)
2.03x1011 Hz
2.
The frequency of violet light is 7.5x1014 Hz. What is its wavelength?
a)
4.0x10-7 m
b)
4.0x107 m
c)
2.25x1023m
d)
2.25x1023 Hz
3.
Which choice has the electromagnetic radiation in order by descreasing wavelength?
a)
x-rays, ultra-violet rays, infrared radiation, and radiowaves.
b)
radiowave, infrared radation, ultra-violet rays, and x-rays
c)
radiowave, ultra-violet rays, infrared radation, and x-rays
d)
x-rays, ultra-violet rays, infrared radation, and radiowave
4.
Which statement is true about the ground state and the excited state of an electron?
a)
The ground state is the highest energy level of an electron.
b)
The excited state is the lowest energy level of an electron.
c)
The ground state is the lowest energy level of an electron.
d)
When an electron goes from the ground state to an excited state it releases light energy.
5.
As the wavelength of light increases
a)
the frequency increases.
b)
the speed of light increases.
c)
the energy decreases.
d)
the intensity increases.
6.
In the third energy level,
a)
there are two energy sublevels.
b)
the f sublevel has 7 orbitals.
c)
there are three s orbitals.
d)
a maximum of 18 electrons are allowed.
7.
Using the two equations E=hv and c=λv derive an equation expressing E in terms of h, c, and λ.
a)
E=h/cλ
b)
E=hc/λ
c)
E=hcλ
d)
E=h/cλ
8.
Which theory of light- the wave or particle theory- best explains the interference of light?
a)
wave theory
b)
particle theory
9.
Which theory of light- the wave or particle theory- best explains the photoelectric effect
a)
wave theory
b)
particle theory
10.
Which theory of light- the wave or particle theory- best explains the emission of electromagnetic radiation by an excited atom.
a)
wave theory
b)
particle theory
11.
What is the speed of light?
a)
3.0x108 ms
b)
3.0x108 m/s
c)
6.626x10-34 Js
d)
6.626x10-34 J/s
12.
What is Planck's Constant
a)
6.626x10-34 Js
b)
6.626x10-34 J/s
c)
3.0x108 ms
d)
3.0x108 m/s
100 %
