The eye lens forms an inverted, real image of the object on the retina. This is similar to how a camera lens works, focusing light to create an upside-down image on the retina. The brain interprets this image correctly oriented, ...
Tiwari Academy Discussion Latest Questions
The sun’s rays contain seven colors. When sunlight passes through a prism or is dispersed through other means, it separates into a spectrum of colors: red, orange, yellow, green, blue, indigo, and violet. These colors collectively make up the visible ...
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.
The main colors in photography are red, green, and blue (RGB). These colors correspond to the primary colors used in additive color mixing, where different intensities of red, green, and blue light combine to create a wide spectrum of colors ...
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.
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 ...
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 ...