Prism Light Deviation Explained
When white light passes through a prism, it splits into its constituent colors due to a phenomenon called dispersion. Each color bends at a slightly different angle.
The amount a color deviates depends on its wavelength. The prism's material refracts light, and the refractive index varies slightly for different wavelengths.
- Colors with shorter wavelengths (like Violet) have a higher refractive index in the prism material and therefore deviate more.
- Colors with longer wavelengths (like Red) have a lower refractive index and therefore deviate less.
Red light possesses the longest wavelength in the visible spectrum. As a result, it experiences the least amount of bending or deviation when passing through the prism.
Thus, the color that deviates the least is Red.
Similar Questions
- The ability of a medium to refract light is also expressed in terms of its:
- The center of the reflecting surface of a spherical mirror is a point called:
- The lens which is thin in the middle and thick at its periphery is called a:
- Shadows are formed when _____ objects come in the path of light.
- Which type of mirror is used by dentists to see large images of patients' teeth?
- The blue colour of the sky is due to the:
- If a lens has a focal length of $25\text{ cm}$, what will be the power of that lens?
- Which kind of mirrors is used as rear view wing mirrors in vehicles?
- For a person with Hypermetropia or far-sightedness, the near point, is _____ farther away from the normal near point.
- Hypermetropia can be corrected by using:
Important Questions from Optics
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
An object is placed 10 cm in front of a lens. The image formed is real, inverted and of same size as the object. What is the focal length and nature of the lens?
The power of a lens is -2.5 D. The type of lens and its focal length are respectively:
