The stars appear higher in the sky than they actually are due to atmospheric refraction. As starlight enters the Earth’s atmosphere, it bends towards the normal because the atmosphere’s density increases closer to the surface. This bending makes the stars ...
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The power of a convex lens with a focal length of 0.2 meters will be +5D. Power (in diopters) of a lens is calculated as the reciprocal of its focal length in meters, so a focal length of 0.2 meters ...
A diverging lens is one that spreads rays of light. It is thinner at the center than at the edges, causing parallel rays of light passing through it to diverge away from a focal point, where the virtual image is ...
Diffusion of light in the atmosphere occurs primarily due to the presence of dust particles. These microscopic particles scatter sunlight as it passes through the atmosphere, causing the sky to appear blue during the day and red or orange during ...
The rainbow displays a continuous spectrum of colors. It typically shows seven distinct colors: red, orange, yellow, green, blue, indigo, and violet. This sequence of colors is formed due to the dispersion and refraction of sunlight through water droplets in ...