the wavelenght of two electromagnetic radiation is 400 nm and 200nm . thus , the ratio of their velocities will be equal to?
Answers
Answer:
If you note the units you are using, it becomes easier.
You have
1
s
, and oftentimes with wavelength, you want to convert to
nm
which is UV-Vis range (
200~700 nm
), and is often of spectral interest.
What you want to do is:
1
s
→
1
m
→
m
→
nm
Conversion factors are extremely useful, and one easy one to remember is the speed of light, which is about
3
×
10
8
m/s
.
1
1
s
⋅
s
m
=
m
And finally, we can convert to
nm
:
10
9
nm
=
1 m
→
conversion factor:
10
9
nm
1 m
m
⋅
10
9
nm
1
m
Thus, overall, you just have:
nm
=
1
1
s
⋅
s
3
×
10
8
m
⋅
10
9
nm
1
m
=
1
1
/
s
⋅
3
×
10
8
m
/
s
×
10
9
nm
1
m
Answer:
Explanation:
Definition of wavelength:
A wave's wavelength is the characteristic that determines the separation between identical spots in two succeeding waves.
Using the Greek letter lambda (), it is identified. As a result, wavelength refers to the separation between one wave's crest or dip and the following wave.
The distance between the two subsequent crests or troughs of the light wave is what is known as the wavelength of light.
Definition of electromagnetic radiation:
It is possible to define electromagnetic radiation as a type of energy that is created by electrically charged particles moving through matter or a vacuum, as well as by oscillating magnetic and electric disturbance. The combined waves move perpendicular to both the electric and magnetic oscillating fields that are causing the disturbance, which is caused by the magnetic and electric fields coming together at a 90° angle.
Given:
wavelength(λ1) =
wavelength(λ2) =
To find:
ratio of their velocities
Solution:
Assuming v ∝ λ
v1 / v2 = λ1 / λ2
=
=
The ratio of their velocities will be equal to
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