Single Choice

The rising and setting of sun appear red because of :

Arefraction
Breflection
Cdefraction
Dscattering
Correct Answer

Solution

The reddish appearance of the sun at sunrise or sunset is due to scattering of light by the molecules of air and other fine particles in the atmosphere.

Hence the option D is the right answer

SIMILAR QUESTIONS

Magnetism

If the magnetizing field on a ferromagnetic material is increased, its permeability.

Magnetism

An iron rod is placed parallel to the magnetic field of intensity 2000 A/m. The magnetic flux through the rod is $$6 \times 10^{-4} Wb$$ and its cross-sectional area is 3 cm$$^2$$. The magnetic permeability of the rod in $$\dfrac{Wb}{A- m}$$ is:

Magnetism

Let $$[\varepsilon_o]$$ denote the dimensional formula of the permittivity of the vacuum, and $$[\mu_o]$$ that of the permeability of the vacuum. If M$$=$$mass, L$$=$$length, T$$=$$time and I$$=$$ electric current.

Magnetism

If $$\mu _{r}$$ be the relative permeability and $$\varepsilon _{r}$$ be the relative dielectric constant of a medium, its refractive index is:

Magnetism

The dimension of $$\sqrt{\dfrac{\mu }{\epsilon }}$$ where $$\mu$$ is permeability & $$\epsilon$$ is permittivity is same as :

Magnetism

Two substances A and B have their relative permeabilities slightly greater and slightly less than 1 respectively. What do you conclude about A and B as far as their magnetic materials are concerned?

Magnetism

In terms of potential difference V; electric current I, permittivity $$\varepsilon_0$$, permeability $$\mu_0$$ and speed of light c, the dimensionally correct equation(s) is(are).

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