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WorksheetsElectromagnetic Waves (Wave Equation/Planck Relation
Total questions: 10
Worksheet time: 50mins
What is the speed of light in a vacuum?
3×108 m/s
3×10−8 m/s
6.63×1034 J s
6.63×10−34 J s
What is the value of Planck's constant?
3×108 m/s
3×10−8 m/s
6.63×1034 J s
6.63×10−34 J s
Which of the following is TRUE about the frequency and energy in electromagnetic waves?
As the frequency of an EM wave increases, the energy also increases.
As the frequency of an EM wave increases, the energy decreases.
The Planck's constant increases when the frequency and energy of an EM wave increase.
There is no relation between the energy and the frequency of an EM wave.
What is the frequency of green light that has a wavelength of 500 nm?
6×10−3 Hz
6×105 Hz
6×1014 Hz
6×10−16 HZ
What is the frequency of red light that has a wavelength of 7.5 ×10−7 m?
4×10−14 Hz
4×1014 Hz
2.5×1014 Hz
2.5×10−14 HZ
A radio station utilizes frequencies between commercial AM and FM. What is the frequency of a 11.12-m-wavelength channel?
26.96 kHz
26.96 MHz
26.96 GHz
26.96 THz
What is the wavelength of a microwave transmission at 1,575.42 MHz?
1.9×10−14 m
1.9×10−9 m
0.19 m
1900 m
Some radar systems detect the size and shape of objects such as aircraft and geological terrain. Approximately what is the smallest observable detail utilizing 500-MHz radar?
0.6 m
6.0 m
60.0 m
6.0×10−2 m
Calculate the energy of a photon of light with a frequency of 6.165 x 10^14 Hz.
4.087×1019 J
4.087×10−19 J
4.087×1049 J
4.087×10−49 J
Calculate the frequency and the energy of blue light that has a wavelength of 400 nm.
f=7.5×102 Hz, E=3×108J J
6.63×10−34 Hz , E=3×108 J J
f = 7.5×1014 Hz , E=4.97×10−19J J
none of the above J
