bending of light occurs in both prism and lens. why prism does not form imges?
Answers
Answer:
plz follow me on and mark as brainalist plz
Explanation:
12th
Physics
Ray Optics and Optical Instruments
Dispersion
Dispersion of Light by Prism
Dispersion of Light by Prism
DOWNLOAD PDF FOR FREE
DISPERSION BY PRISM - DIAGRAM
The figure shows the dispersion of light wave by a prism.
When white light incident on a glass prism, the emergent light is seen to be consisting of several colors(violet, indigo, blue, green, yellow, orange and red). The red light bends the least, while the violet light bends the most(as shown in figure).
The phenomenon of splitting of light into its component colours is known as dispersion. The pattern of colour components of light is called the spectrum of light.
CONDITIONS FOR OBTAINING PURE SPECTRUM FROM A PRISM - DEFINITION
Prism should be in the position of minimum deviation
Rays of light incident on the prism are parallel to each other
The light source is monochromatic
The parallel beams of different colours of light emerging from the prism should be focused by a lens onto a screen so that they do not overlap.
BENDING OF WHITE LIGHT SPECTRUM AFTER REFRACTION THROUGH PRISM - DEFINITION
Light changes speed as it moves from one medium to another (for example, from air into the glass of the prism). This speed change causes the light to be refracted and to enter the new medium at a different angle (Huygens principle). The degree of bending of the light's path depends on the angle that the incident beam of light makes with the surface, and on the ratio between the refractive indices of the two media (Snell's law). The refractive index of many materials (such as glass) varies with the wavelength or color of the light used, a phenomenon known as dispersion. This causes light of different colors to be refracted differently and to leave the prism at different angles, creating an effect similar to a rainbow. This can be used to separate a beam of white light into its constituent spectrum of colors.