Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
(i) A ray of white light breaks up into its components while passing through a glass prism. Draw a ray diagram to show the path of rays.(ii) Mark the least deviated colour in your diagram (iii) Why do different coloured rays deviate differently in a prism?
(i) A ray of white light splits into its constituents colours while passing through a triangular glass prism.
A ray diagram to show the path of rays is given below:
(ii) The least deviated colour is red, as it has the longest wavelength and the least frequency (least deviation),
(iii) Different coloured rays deviate differently in a prism because they have different wavelengths. Therefore, they deviate differently when passing through a glass prism. The amount of deviation depends on the wavelength of the coloured light.
Explanation
The phenomenon of splitting white light into its components colours (violet, indigo, blue, green, yellow, orange and red) while passing through a prism is known as the Dispersion of light. In the spectrum, red is seen at the top as it has the longest wavelength whereas violet is seen at the bottom of the spectrum as it has the shortest wavelength.
The cause of the dispersion of light through the prism is because white light is a mixture of seven different colours and they get refracted (bend) at different angles in the prism medium due to differences in their speed and wavelengths. So they get separated.
90 Views
