Question

We see the sun even after it goes below the horizon, because ______.

Options

• refraction of light

• dispersion of light

• partial reflection of light 

• reflection of light

Answer 1

We see the sun even after it goes below the horizon, because refraction of light.

Explanation:

As sunlight enters the Earth's atmosphere, it travels through layers of increasing air density, which causes the light rays to bend downwards toward the surface. This atmospheric refraction creates an optical illusion that makes the sun appear slightly higher than its true position, allowing us to see it for a few minutes even after it has physically crossed below the horizon.