Question 156: Ray Optics

Question

When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different colours of light converge at different point on the principle axis after refraction. This is called :

Accepted Answer

The phenomenon described in the statement is called
chromatic aberration
.
Chromatic aberration
is a type of optical aberration that occurs when a lens is unable to focus different colors of light at the same point after refraction. This causes the different colors of light to converge at different points on the principal axis, resulting in blurred or distorted images.
In the case of a convex lens, the refractive index of the lens is different for different colors of light. The blue light, having the shortest wavelength, refracts the most and the red light, having the longest wavelength, refracts the least. This causes the blue light to converge at a point closer to the lens than the red light, resulting in a blurred image.
Spherical aberration
, on the other hand, is a type of optical aberration that occurs when a spherical lens is unable to focus all the incident light rays at a single point, resulting in a blurred image. Polarization refers to the orientation of the electric field of light waves, and scattering refers to the phenomenon of light being redirected in different directions due to interaction with matter.

Answer

Spherical aberration

Answer

Scattering

Answer

Polarisation

Answer

Chromatic aberration

Ray Optics

When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different colours of light converge at different point on the principle axis after refraction. This is called :

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