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<u>2. Intensity of light</u><u> </u><u>waves.</u>
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The brightness of light is related to intensity or the amount of light an object emits or reflects.
<u>Brightness depends on light wave amplitude, the height of light waves.</u>
Brightness is also somewhat influenced by wavelength.
<u> Yellow light tends to look brighter than reds or blues.</u>
Answer:
The correct option is H
Explanation:
From the question we are told that
The index of refraction of coating is
The index of refraction of material is
Generally the condition for constructive for a thin film interference is mathematically represented
Here t represents the thickness
For minimum thickness m = 0
So
=>
The weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosphere is, 4.56*10^5N.
To find the answer, we have to know about the pressure.
<h3>How to find the weight of a column of air?</h3>
where; F is the force, here it is equal to the weight of the air column, and A is the area of cross section.
Thus, we can conclude that, the weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosphere is, 4.56*10^5N.
Learn more about the pressure here:
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