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Mrrafil [7]
4 years ago
5

What is convection ?

Physics
2 answers:
bagirrra123 [75]4 years ago
5 0
Convection is the rise of hot air and the drop of cold air due to a large amount of molecules being moved usually in gas form.\

Hope this helps!
True [87]4 years ago
5 0
Convection is basically when a liquid gets hot, rises, cools down, moves to the side and back to the bottom to get hot again. The best example of convection is a pot of boiling water

A more scientific definition of convection is: <span>the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
</span>
hope this helps
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Unpolarized light is passed through three successive polaroid filters, each with its transmission axis at 32. 8° to the precedin
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The percentage of light gets through three successive polarized filters is 24.9 %

From the question,

Given that,

Angle of transmission axis = 32.8°

The intensity of light emerging from the first polarizer is determined by the equation

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The light emerging from the second polarizer can be mathematically represented by,

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I₂ =( I₀/2) x cos²θ

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  = (I₀/2) x 0.706

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The light emerging from the third polarizer is represented as,

I₃ = I₂ x cos²θ

Substituting the values in the above equation,

I₃ = ( 0.706 / 2 ) I₀ x cos² (32.8)

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The percentage of intensity of light  that gwts through with respect to the intensity of unpolarized light is given by the equation,

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Substituting the values

[(0.249 x I₀) / I₀ ] x 100 = 24.9 %

Hence the percentage of light gets through is 24.9%

To learn more about unpolarized light: brainly.com/question/17164167

#SPJ4

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