Class 8 - Light Quiz - Mighty Classes

Class 8 – Light Quiz

Welcome to your Class 8 - Light Quiz

Descriptions

Prepare to ace your exams with our 30-Minute Class 8 Science Light Chapter Test. This interactive quiz contains 30 important MCQs that cover all the critical concepts from the chapter.

📝 Test Guidelines:

Total Questions: 30
Time Limit: 30 Minutes
Scoring: 1 mark per correct answer (Total 30 marks)
Negative Marking: None! (Feel free to guess if you are unsure)

🔍 What you will be tested on:

Laws of reflection and properties of light
Regular and diffused reflection
Multiple reflections (Kaleidoscopes and Periscopes)
Dispersion of light and the color spectrum
The anatomy of the human eye and vision care
The Braille system for the visually challenged

Instructions: You have exactly 30 minutes to complete all 30 questions. Choose the best possible answer for each question. Ready to challenge yourself? Begin the test below!

Name

Phone

1. The bouncing back of light from a shining surface is called:

A) Refraction

B) Reflection

C) Dispersion

D) Bending

None

2. According to the laws of reflection, the angle of incidence is always:

A) Greater than the angle of reflection

B) Less than the angle of reflection

C) Equal to the angle of reflection

D) Unpredictable

None

3. If the angle of incidence is 40°, what will be the angle of reflection?

A) 20°

B) 40°

C) 80°

D) 90°

None

4. The light ray that strikes any surface is called the:

A) Reflected ray

B) Normal ray

C) Incident ray

D) Emergent ray

None

5. The perpendicular line drawn at the point of incidence on a mirror is known as the:

A) Incident ray

B) Reflected ray

C) Normal

D) Plane of reflection

None

6. Reflection from a smooth and highly polished surface is called:

A) Irregular reflection

B) Diffused reflection

C) Regular reflection

D) Multiple reflection

None

7. Reflection from a rough surface, like cardboard, is known as:

A) Regular reflection

B) Perfect reflection

C) Direct reflection

D) Diffused reflection

None

8. The image formed by a plane mirror is always:

A) Real, inverted, and smaller

B) Virtual, erect, and of the same size

C) Real, erect, and magnified

D) Virtual, inverted, and magnified

None

9. In a plane mirror, the left side of the object appears to be the right side of the image. This phenomenon is called:

A) Lateral inversion

B) Dispersion

C) Regular reflection

D) Refraction

None

10. If two plane mirrors are placed at an angle of 90° to each other, how many images of an object placed between them will be formed?

A) 2

B) 4

C) 3

D) Infinite

None

11. Which device works on the principle of multiple reflections to create beautiful patterns?

A) Periscope

B) Microscope

C) Kaleidoscope

D) Telescope

None

12. A periscope works on the principle of:

A) Refraction

B) Dispersion

C) Multiple reflection

D) Lateral inversion

None

13. The splitting of white light into its seven constituent colors is called:

A) Reflection

B) Refraction

C) Deflection

D) Dispersion

None

14. Which of the following is a natural phenomenon showing the dispersion of light?

A) Eclipses

B) Rainbow

C) Lightning

D) Twinkling of stars

None

15. White light consists of how many colors?

A) 7

B) 5

C) 3

D) 9

None

16. The front transparent, bulging part of the human eye is called the:

A) Retina

B) Cornea

C) Lens

D) Iris

None

17. The dark muscular structure behind the cornea that gives the eye its distinct color is the:

A) Pupil

B) Iris

C) Retina

D) Optic nerve

None

18. The small opening in the iris that controls the amount of light entering the eye is the:

A) Cornea

B) Lens

C) Pupil

D) Blind spot

None

19. The screen at the back of the eye where the image is formed is called the:

A) Retina

B) Cornea

C) Iris

D) Sclera

None

20. The nerve cells on the retina that are sensitive to bright light and colors are called:

A) Rods

B) Sensory nerves

C) Optic nerves

D) Cones

None

21. The nerve cells sensitive to dim light are called:

A) Rods

B) Cones

C) Both A and B

D) None of the above

None

22. The junction of the optic nerve and the retina where no vision is possible is called the:

A) Blind spot

B) Dark spot

C) Vision spot

D) Focal point

None

23. The nature of the image formed on the retina of a human eye is:

A) Virtual and erect

B) Real and inverted

C) Virtual and inverted

D) Real and erect

None

24. The condition in old age where the eye lens becomes cloudy, causing blurry vision, is known as:

A) Myopia

B) Hypermetropia

C) Cataract

D) Night blindness

None

25. Deficiency of which vitamin in the diet is responsible for eye problems like night blindness?

A) Vitamin A

B) Vitamin B

C) Vitamin C

D) Vitamin D

None

26. Which of the following is a good source of Vitamin A?

A) Lemon

B) Potato

C) Rice

D) Carrot

None

27. The most popular resource for visually challenged persons to read and write is the:

A) Sign language

B) Morse code

C) Braille system

D) Abacus

None

28. Who developed the Braille system?

A) Louis Braille

B) Thomas Edison

C) Alexander Graham Bell

D) Isaac Newton

None

29. The present Braille system consists of how many dot patterns or characters?

A) 26

B) 63

C) 64

D) 128

None

30. Which of the following objects is non-luminous?

A) The Sun

B) A glowing bulb

C) A burning candle

D) The Moon

None

1 out of 5

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