Without an atmosphere, the sky visible from Earth would appear black. This is because the scattering of sunlight by atmospheric gases, which causes the blue color of the sky, would not occur in the absence of an atmosphere.
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The light with the shortest wavelength is violet. Violet light has the shortest wavelength among the visible spectrum, ranging approximately from 380 to 450 nanometers, making it the shortest wavelength visible color.
The red color in the sky at sunrise and sunset is caused by scattering. As the sun is low on the horizon, sunlight passes through more of the Earth’s atmosphere. Shorter wavelengths (blue and violet) scatter out, leaving the longer ...
Convex mirrors are used in automobiles to see the rear side traffic. They provide a wider field of view compared to plane mirrors, allowing drivers to see more area behind them. The convex shape makes objects appear smaller but covers ...
The power of the lens with a focal length of 25 cm will be +4D. The power of a lens in diopters (D) is calculated as the reciprocal of the focal length in meters, so a focal length of 25 ...
The division of different colors of light in a prism is called dispersion of light. This phenomenon occurs because different wavelengths of light refract at different angles as they pass through the prism, separating into a spectrum of colors from ...
The mirror used for shaving is a plane mirror. It provides a non-inverted virtual image that appears to be the same size as the object, making it suitable for tasks requiring accurate reflection without distortion.
The minimum height of a plane mirror to see the full image of a person should be equal to half the height of the person. Placing the mirror at this height ensures that the entire body from head to toe ...
A converging lens is one that collects rays of light. It is thicker at the center than at the edges, causing parallel rays of light passing through it to converge at a focal point beyond the lens, where a real ...
The color of light is determined by its wavelength. Different wavelengths of light correspond to different colors in the visible spectrum. Shorter wavelengths appear blue or violet, while longer wavelengths appear red or orange, influencing the perceived color of light.