When red, green, and blue colors of light are mixed in equal proportions, the resulting color will be white. This additive color mixing principle is used in devices like computer monitors and televisions to produce a full range of colors ...
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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 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 ...
If the power of the lens of an eyeglass is +2 diopters, its focal length will be 50 cm. The focal length of a lens in meters is the reciprocal of its power in diopters.
When a convex lens is immersed in water, its focal length decreases. This is because the refractive index of water is higher than that of air, causing light to bend more sharply, effectively decreasing the lens’s ability to converge light ...