UrbanPro
true

Take Class 10 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Spectrum from prism

Debasish Dutta
27/05/2017 0 0

Spectrum from prism:

Sunlight is often called white light, since it is a combination of all the visible colors. Since the index of refraction is different for each color, the angle of refraction will be different for each color when the light passes from air into glass or other transparent material. This is according to Snell's Law.

Now if the piece of glass has parallel sides--such as with a window--the light will return in the same direction that it entered the material. But if the material is shaped like a prism, the angles for each color will be exaggerated, and the colors will be displayed as a spectrum of light.

When Prism spreading white light into a spectrum of light, The visible colors are in the order of the spectrum. You can remember the order by the name VIBGYOR.

Note that in the illustration above, the colors are distinctly separated. In realty, they blend into each other, such that there are colors in between. For example, there is red-orange in between red and orange.

 

Explanation:

Light of all colours have the same velocity in vacuum or air. But in any other medium, velocity is different for different colours of light. For example, in glass the velocity of red light is the greatest and that of violet light is the least. So, the refractive index of glass for violet light will be greater than that for red light. Thus deviation of violet light becomes maximum and that for red light becomes minimum while passing from air to prism. Deviations for other five colours lie in the range between the deviations of these two colours. So, the different in refractive indices of a medium for different colours of light results in the formation of spectrum.      

0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You

Maths Is Magic
Mathematics is the magical subject. There is no any other subject in which mathematics is not use. When the human starts learning, its starting with mathematics. We cannot imagine life...
M

Mohit S.

1 0
0

Refraction and Laws Of Refraction
Refraction: When a ray of light travelling in a homogenous medium, strikes a surface of separation between the two media, passes through it and goes into the second medium. The phenomenon is referred to...

Maths Home Tutor In Kolkata
Study text book properly and give test regularly.

Computer Worksheet For Grade I/II
Chapters: How Does a Computer Work And Starting Up And Shutting Down: 1. Write T for True and F for False: CPU is the brain of the computer. The CPU has a device called the Pen drive. Switching...

Solving Simultaneous Equations Fastest Way
Q) 2x + 3y = 13; 4x + 5y = 23? Ans: Now take LHS of both the equations and cross multiply and subtract. We get 3*4-5*2 = 2. Let it be 'a'. Now to find x neglect the x terms and cross multiply the other...
X

Looking for Class 10 Tuition Classes?

The best tutors for Class 10 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 10 Tuition with the Best Tutors

The best Tutors for Class 10 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more