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sergiy2304 [10]
3 years ago
10

Cellular telephone use

Physics
2 answers:
german3 years ago
7 0

Answer:

1.c 2.b 3.d

Explanation:

i just took and got these all right

m_a_m_a [10]3 years ago
5 0
A- Radio waves, is the answer
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Light of wavelength 400 nm is incident on a single slit of width 15 microns. If a screen is placed 2.5 m from the slit. How far
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Answer:

0.0667 m

Explanation:

λ = wavelength of light = 400 nm = 400 x 10⁻⁹ m

D = screen distance = 2.5 m

d = slit width = 15 x 10⁻⁶ m

n = order = 1

θ = angle = ?

Using the equation

d Sinθ = n λ

(15 x 10⁻⁶) Sinθ = (1) (400 x 10⁻⁹)

Sinθ = 26.67 x 10⁻³

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Using the equation for small angles

tanθ = Sinθ = y/D

26.67 x 10⁻³ = y/2.5

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