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Light Class 8 Worksheet Science Chapter 13

Q.1. What is angle of incidence?

Q.2. Which part of the eye gives it its distinctive color?

Q.3. What are rods and cones in the retina of an eye?

Q.4. Explain why, an owl can see well in the night but not during the day whereas an eagle can see well during day but not in the night.

Q.5. Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.
(a) Polished wooden table
(b) Chalk powder
(c) Cardboard surface
(d) Marble floor with water spread over it
(e) Mirror
(f) Piece of paper
Q.6. What are the main parts of the human eye?

Q.7. A ray of light is incident on a plane mirror at an angle of 40°. What is the angle of reflection?

Q.8. How do we see a moving picture or a movie?

Q.9. How does eye adjust itself to deal with light of varying intensity?

Q.10. What are the functions of the following parts of the eye?
Iris, Eye-lens, Retina and Optic nerve

Q.11. Describe the construction of a kaleidoscope.

Q.12. What type of reflection of light takes place from a rough surface?

Q.13. What is an 'incident ray'?

Q.14. How many mirrors are there in a periscope?

Q.15. What is meant by dispersion of light'? Name a natural phenomenon showing dispersion.


You can find Worksheets Solutions here: Worksheet Solutions: Light

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FAQs on Light Class 8 Worksheet Science Chapter 13

1. What is light and how is it produced?
Ans. Light is a form of electromagnetic radiation that is visible to the human eye. It is produced when atoms or molecules undergo a transition from a higher energy state to a lower energy state, releasing energy in the form of light.
2. How does light travel and what is its speed?
Ans. Light travels in straight lines called rays or beams. It can travel through a vacuum or through various transparent media such as air, water, or glass. The speed of light in a vacuum is approximately 299,792 kilometers per second.
3. What are the different colors of light and how are they produced?
Ans. Light is composed of various colors that can be seen in a rainbow or when white light passes through a prism. Each color corresponds to a different wavelength of light. When light interacts with matter, certain wavelengths are absorbed while others are reflected or transmitted, giving rise to the colors we perceive.
4. What is the electromagnetic spectrum and how is light classified within it?
Ans. The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Light falls within the visible portion of the spectrum, with a wavelength range of approximately 400 to 700 nanometers.
5. How does light interact with objects and what are the different types of interactions?
Ans. Light can interact with objects in several ways. It can be absorbed, transmitted, reflected, or refracted. When light is absorbed, it is converted into other forms of energy, such as heat. When light is transmitted, it passes through the object without being absorbed or reflected. Reflection occurs when light bounces off the surface of an object, and refraction happens when light changes direction as it passes from one medium to another.
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