Light Important questions | Grade VIII

Important questions for Light | Grade VIII

1. Define light .
2. Define ray and beam of light .
3. What is meant by reflection of light ?
4. Show the diagram of reflection of light .
5. Define incident , reflected ray , normal , angle of incidence and reflection .
6. What are the laws of reflection of light .
7. Define image .
8. Write the types of image .
9. Define spherical mirror .
10. Write the types of spherical mirror .
11. Define concave and convex mirror.
12. Write the relationship between focal length and radius of curvature .
13. Write the rules of construction of ray diagram .
14. Draw the ray diagram to show the formation of image by concave mirror when the object is kept at infinity , beyond C , at C , between C and F , at F , between F and P .
15. Draw the ray diagram to show the formation of image by convex mirror .
16. Define refraction of light ?
17. Show the phenomenon of refraction of light .
18. Define emergent ray .
19. Define denser and rarer medium .
20. Write the laws of refraction of light .