The twinkling of stars is due to (b) refraction of light by different layers of varying refractive indices.

Here's the step-by-step explanation:

1. Light from the stars travels through the vacuum of space towards Earth.

2. As this light enters the Earth's atmosphere, it passes through layers of air that have different densities and temperatures, which cause varying refractive indices.

3. These different refractive indices cause the starlight to bend or refract.

4. The direction and amount of bending change slightly with the changing physical conditions of the Earth's atmosphere (like temperature and pressure fluctuations).

5. These rapid changes in the apparent position of the star give the effect of the star 'twinkling'. This phenomenon is technically known as stellar scintillation.

So, the correct answer is (b) refraction of light by different layers of varying refractive indices.

Question

The twinkling of stars is due to (b) refraction of light by different layers of varying refractive indices.

Here's the step-by-step explanation:

1. Light from the stars travels through the vacuum of space towards Earth.

2. As this light enters the Earth's atmosphere, it passes through layers of air that have different densities and temperatures, which cause varying refractive indices.

3. These different refractive indices cause the starlight to bend or refract.

4. The direction and amount of bending change slightly with the changing physical conditions of the Earth's atmosphere (like temperature and pressure fluctuations).

5. These rapid changes in the apparent position of the star give the effect of the star 'twinkling'. This phenomenon is technically known as stellar scintillation.

So, the correct answer is (b) refraction of light by different layers of varying refractive indices.

Knowee AI · Accepted Answer

The twinkling of stars is due to (b) refraction of light by different layers of varying refractive indices.

Here's the step-by-step explanation:

1. Light from the stars travels through the vacuum of space towards Earth.

2. As this light enters the Earth's atmosphere, it passes through layers of air that have different densities and temperatures, which cause varying refractive indices.

3. These different refractive indices cause the starlight to bend or refract.

4. The direction and amount of bending change slightly with the changing physical conditions of the Earth's atmosphere (like temperature and pressure fluctuations).

5. These rapid changes in the apparent position of the star give the effect of the star 'twinkling'. This phenomenon is technically known as stellar scintillation.

So, the correct answer is (b) refraction of light by different layers of varying refractive indices.

Twinkling of stars is due to atmospheric(a) dispersion of light by water droplets(b) refraction of light by different layers of varying refractive indices(c) scattering of light by dust particles(d) internal reflection of light by clouds

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