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Electromagnetic Radiation
Related Topics
Wize University Chemistry Textbook > Early Atomic Theory to Quantum Theory
Electromagnetic Radiation
7 Activities
As the wavelength of light decreases, which is also true of light?
frequency decreases and energy decreases
frequency decreases and energy increases
frequency increases and energy increases
frequency increases and energy decreases
both frequency and energy stay the same
I don't know
Check Submission
More Electromagnetic Radiation Questions:
Electromagnetic Radiation
A green laser pointer emits light at 532.0 nm. What is the frequency of this radiation?
Electromagnetic Radiation: Photon energy
A laser emits light at a wavelength of 710 nm.
What is the energy of a single photon from this laser?
Electromagnetic radiation: Wave energy
A laser emits light at a wavelength of 710 nm.
What is the frequency of this light?
Photon
What is the energy of a light wave with frequency of
1.04
×
10
15
H
z
1.04\times10^{15}Hz
1.04
×
1
0
15
H
z
?
Energy of Light
A UV light of frequency 2.73
⋅
\cdot
⋅
10
16
s
−
1
is ____ times _____ in energy than a yellow light of frequency 5.26
⋅
\cdot
⋅
10
14
s
−
1
Electromagnetic radiation
Which of the following wavelengths corresponds to a photon in the infrared region of
the electromagnetic spectrum?
Electromagnetic Radiation
If a photon of light has
λ
=
478
n
m
,
\lambda=478\ nm,
λ
=
478
nm
,
what is it’s wavelength in meters?
Electromagnetic Radiation
A green laser pointer emits light at 532.0 nm. What is the frequency of this radiation?
Electromagnetic Radiation
Which of the following statements are true?
i. When an electron falls to a lower energy level in an atom, it emits electromagnetic radiation.
ii. The energy of electromagnetic radiation is directly proportional to its frequency.
Electromagnetic radiation: Frequency of light
Your mean professor (in a different course) shines a red laser pointer into your eye with a wavelength of 666 nm. What is the frequency of this light?
Electromagnetic Radiation: Photon energy
A laser emits light at a wavelength of 710 nm.
What is the energy of a single photon from this laser?
A laser emits light at a wavelength of 710 nm.
What color is the laser?
Laser Emitting Photons Problem
A laser emits a light beam with a power of 5 mW. The wavelength of the light is 374 nm. How many photons per second does this laser emit? (3mW=3mJ/s)
Hint: Calculate the energy of a single photon
Power=5mW (light beam) based on conversion provided I know this is equal to 5mJ/s
wavelength=374nm -> convert to m: 1nm=1x10-9m, so 374x10-9m
Wavelength
Which of the following has the longest wavelength?
Electromagnetic Radiation
4.
Rank the following from longest wavelength to shortest wavlength: Microwaves, ultraviolet, infrared, visible light, and X-rays. (In the table, 1=longest and 5=shortest)
Electromagnetic Radiation
An organic molecule absorbs radiation that has a frequency of 2.8 x 10
15
s
-1
.
a)
What is the wavelength of radiation?
b)
What is the energy of radiation?
Electromagnetic Radiation
6.
A carbon-nitrogen bond in an organic molecule absorbs radiation that has a frequency of 4.3 x 10
12
s
-1
.
a)
What is the wavelength of radiation?
b)
What is the energy of radiation?
Electromagnetic Radiation
5.
Which of the following statements are true?
Electromagnetic radiation: Wave Energy
Calculate the energy of one photon whose wavelength is 589 nm.
Practice: Photon
What is the energy of a light wave with frequency of
1.04
×
10
15
H
z
1.04\times10^{15}Hz
1.04
×
1
0
15
H
z
?
Electromagnetic Radiation
What is the wavelength of a photon of light, which has a frequency of 2.8 x 10
14
Hz?
A photon of light has a wavelength of 700 nm. What is its frequency?
Electromagnetic radiation: Wave energy
A laser emits light at a wavelength of 710 nm.
What is the frequency of this light?
If a light wave has a wavelength of 420 nm, what is it’s frequency?
If the answer has an exponent write it like this 1.23x10^4 (no spaces)
Electromagnetic Radiation: Practice
Rank the following types of electromagnetic radiation from lowest to highest energy.
Radio Waves, Infrared Radiation, X-rays, Microwaves, Visible Light, UV Radiation
Transverse Waves
Use the graph below to answer the following questions:
1. Which wave has the lowest energy?
D
2. What is the wavelength of wave A?
200nm
Choose one of the following statements which is FALSE
An electromegnetic wave undergoes three complete oscillations over a 360 nm segment of space. What is the frequency of this wave?
Electromagnetic Radiation
Rank the following types of electromagnetic radiation from lowest to highest energy.
Radio Waves, Infrared Radiation, X-rays, Microwaves, Visible Light, UV Radiation
Electromagnetic Radiation: Energy
A photon has wavelength of 2.0 cm in space. What is its energy?
Electromagnetic Radiation: Energy of Blue Laser Pointers
An argon ion laser produces a blue laser beam with a wavelength of 458 nm. What is the energy of this light expressed in kJ/mol?
What is the wavelength of a an electromagnetic wave with a frequency of 3.78 x 10
15
s
-1
?