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4 years ago

At sunset, the sun appears reddish. What is MOST LIKELY the reason for this phenomenon?

Physics

2 answers:

Zinaida [17]4 years ago

4 0

Answer :

(A)" Sunlight travels through a longer distance at sunset and interacts with more particles ".

Explanation :

The sunlight is made up of seven colors. The wavelength of red light is maximum as compared to other colors.

And as per Rayleigh law $I \propto \dfrac{1}{\lambda^4}$

Where,

I is the intensity of scattered light

$\lambda$ is the wavelength

The scattering of red light is least.

At sunset, the sunlight travels through a longer distance.This is because they are near to horizon.

Also, there are many particles, dust and moisture are present in the atmosphere in the evening. So, the sun appears reddish.

Hence, the correct option is (A).

Alexeev081 [22]4 years ago

3 0

The only correct statement on the list is choice-A./

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3 years ago

Charge of uniform linear density (6.7 nC/m) is distributed along the entire x axis. Determine the magnitude of the electric fiel

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Thw question is not complete. The complete question is;

Charge of uniform linear density (6.7 nCim) is distributed along the entire x axis. Determine the magnitude of the electric field on the y axis at y = 1.6 m. a. 32 N/C b. 150 NC c 75 N/C d. 49 N/C e. 63 NC

Answer:

Option C: E = 75 N/C

Explanation:

We are given;

Uniform linear density; λ = 6.7 nC/m = 6.7 × 10^(-9) C/m

Distance on the y-axis; d = 1.6 m

Now, the formula for electric field with uniform linear density is given as;

E = λ/(2•π•r•ε_o)

Where;

E is electric field

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r is distance = 1.6m

ε_o is a constant = 8.85 × 10^(-12) C²/N.m²

Thus;

E = (6.7 × 10^(-9))/(2π × 1.6 × 8.85 × 10^(-12))

E = 75.31 N/C ≈ 75 N/C

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