Class 7 Exam  >  Class 7 Videos  >  Rectilinear Propagation of light - Light - CBSE Class 7 Science

Rectilinear Propagation of light - Light - CBSE Class 7 Science Video Lecture

FAQs on Rectilinear Propagation of light - Light - CBSE Class 7 Science Video Lecture

1. What is rectilinear propagation of light?
Ans. Rectilinear propagation of light refers to the phenomenon where light travels in a straight line in a homogeneous medium. This means that light rays do not bend or deviate from their original path unless they encounter a medium with a different refractive index.
2. What are the conditions required for rectilinear propagation of light?
Ans. The conditions required for rectilinear propagation of light are: - The medium through which light is traveling should be homogeneous, i.e., it should have the same physical properties throughout. - The medium should be transparent, allowing light to pass through without absorption or scattering. - The light should not encounter any obstacles or obstructions in its path.
3. How does rectilinear propagation of light relate to the formation of shadows?
Ans. The rectilinear propagation of light is responsible for the formation of shadows. When an object blocks the path of light, it creates an area behind it where light cannot reach. This area is known as a shadow. The straight-line nature of light allows the object to cast a well-defined shadow with sharp edges.
4. Can light undergo rectilinear propagation in a non-homogeneous medium?
Ans. No, light cannot undergo rectilinear propagation in a non-homogeneous medium. When light enters a medium with varying refractive indices, it experiences refraction, causing it to change direction. This bending of light rays prevents the rectilinear propagation of light.
5. How does rectilinear propagation of light explain the visibility of objects?
Ans. The rectilinear propagation of light explains the visibility of objects by stating that light rays from the object enter our eyes in straight lines. These light rays carry information about the object's color, shape, and other characteristics. As our eyes receive these light rays, our brain processes the information, allowing us to perceive and see the object.
Related Searches

Sample Paper

,

Previous Year Questions with Solutions

,

shortcuts and tricks

,

past year papers

,

Rectilinear Propagation of light - Light - CBSE Class 7 Science Video Lecture

,

Free

,

Objective type Questions

,

Semester Notes

,

ppt

,

Extra Questions

,

Rectilinear Propagation of light - Light - CBSE Class 7 Science Video Lecture

,

Summary

,

pdf

,

Exam

,

practice quizzes

,

study material

,

Important questions

,

Rectilinear Propagation of light - Light - CBSE Class 7 Science Video Lecture

,

Viva Questions

,

video lectures

,

mock tests for examination

,

MCQs

;