CBSE Class 8 Science Chapter 13 Light Very Short Answer Questions
Question 1. Why are we able to see the tap water in the glass even though It Is colourless?
Answer: Tap water reflects the light into our eyes. As long as an object reflects light into our eyes, we can see it.
Question 2. Light travels fastest in a vacuum. Why?
Answer: Light travels faster in a vacuum than in any other medium because there is no obstruction to the passage of light in a vacuum.
Read And Learn More CBSE Class 8 Science Very Short Questions And Answers
Question 3. Mention the five English letters that do not show lateral inversion on suffering reflection from a plane mirror.
Answer: The five English letters that do not show the lateral inversion on suffering reflection are A, H, O, T, and U.
” CBSE Class 8 Science Chapter 13 VSAQs “
Question 4. How many times is ray of light reflected by two plane mirrors placed parallel and facing each other?
Answer:
” Light Class 8 Very Short Answer Questions “
The ray is reflected infinitely between the two plane mirrors placed parallel to each other.
Question 5. The angle between the incident ray and the reflected ray is 60 0. What is the value of the angle of incidence?
Answer: Since the angle of incidence = the angle of reflection. So, angle of incidence = 30°
” Reflection of Light Class 8 “
Question 6. Imagine that parallel rays are incident on an irregular surface. Are the rays reflected from this surface parallel to each other?
Answer: No, the reflected rays from an irregular surface are in different directions.
Question 7. When a parallel beam of light hits an uneven surface, predict the nature of the reflected beam.
Answer: When light hits an uneven surface, there are many angles of incidence. Hence, the parallel beam of light rays will be reflected off the surface at different angles,
Question 8. State the size of the image formed by a plane mirror.
Answer: The size of the image formed by a plane mirror is the same as that of the object in front of the mirror.
” Plane Mirror Image Formation “
Question 9. Mention the name of the device that is generally used by the designers of wallpapers and fabrics.
Answer: A Kaleidoscope is a device that is generally used by the designers of wallpapers and fabrics.
Question 10. White light is a combination of which colours?
Answer: White light is a combination of seven colours, which are Violet, Indigo, Blue, Green, Yellow, Orange, and Red.
” Lateral Inversion Class 8 “
Question 11. A safety vest helps to keep workers working by the roadside safe. This is especially so during the benight. Why?
Answer: The reflectors on the safety vest reflect light into the motorist’s eyes. This helps to alert the motorists to the wearer’s presence on the road.