LIGHT
- What is persistence of vision?
- What is accommodation? Explain.
- What is dispersion of light? How it is caused?
- List the characteristics of image formed by the plane mirror.
- Name the muscles attached to the eye lens that make it thicker to see objects.
- Name the property on which working of kaleidoscope is based.
- Name the point where the optic nerve leaves the retina.
- Define light and reflection of light.
- Write the laws of reflection of light.
- Define angle of reflection, angle of incidence and normal.
- What is Braille system? Who invented it?
- What is cataract?
- Give difference between regular and irregular reflection.
- Can we see objects by having eyes only? Comment.
- Differentiate between real and virtual image.
- How transparent, translucent and opaque objects are different?
- What is lateral inversion?
- Describe the structure of human eye. Draw diagram.
- How is a visually challenged person can read and write? What are the helpful optical aids that can be provided to them?
20. What is the speed of light in the vacuum?
- Name the defects of vision? How they can be corrected?
- Draw ray diagrams to show image formation by a convex lens when:
a) The object is placed at 2F
b) The object is between F and 2F
c) The object is beyond 2F
d) The object is at infinity\
e) The object is at F
f) The object is between F and pole.
- What will be the angle of incidence if angle of reflection is 39.
- Which is the light sensitive layer of an eye?
- What are rods and cones?
- What is spectrum?
- Name the part of the eye that regulates the amount of light entering the eye.
- Night birds have ______ rods than cones in their eye.
- What type of image is formed by a plane mirror?
30. Name any two popular physically challenged personalities of India.