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MAXImum [283]
3 years ago
7

7. When initially-unpolarized light passes through three polarizing filters, each oriented at 45 degree angles from the precedin

g filter, _____ of the initial light passes through the last filter.
Physics
1 answer:
GREYUIT [131]3 years ago
7 0

Answer:

Explanation:

Let the intensity  of unpolarised light be I₀ . After passing through the first polarising filter , the intensity  is I₀ / 2 .

After second filter , the intensity  will be  I₀ / 2 x cos²45 =  I₀ / 4

After third filter , the intensity will be I₀ / 4  x cos²45 = I₀ / 8 .

So,

1 / 8 the of initial light passes through the last filter .

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