Class 8 Science — Chapter 13: Light
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise Class 8 Science Chapter 13, "Light", with 72 NCERT-aligned multiple-choice questions. The set is split into 24 Easy, 24 Medium and 24 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams.
"Light" is one of the chapters where concept clarity across physics, chemistry and biology basics really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Light, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 8 Science mastery score. A few sample questions are shown below; sign in free to practise all 72.
Key concepts: Light (Class 8 Science)
This chapter covers reflection of light, image formation in mirrors, the human eye, and care of the eyes.
- Laws of reflection
- The angle of incidence equals the angle of reflection, and the incident ray, normal and reflected ray lie in one plane.
- Regular vs diffused reflection
- Smooth surfaces give regular reflection (clear image); rough surfaces give diffused reflection (no clear image).
- Images in a plane mirror
- Virtual, erect, same size, laterally inverted, and as far behind the mirror as the object is in front.
- The human eye
- Light enters through the cornea and pupil; the lens forms an image on the retina, sent to the brain by the optic nerve.
- Care & aids
- A balanced diet (vitamin A) keeps eyes healthy; Braille helps the visually impaired read by touch.
Key formulas — Light
💡 Exam tips for Light
- A plane-mirror image is virtual, erect and laterally inverted (left–right swapped).
- Diffused reflection (from rough surfaces) still obeys the laws of reflection at each point.
Sample questions
The bouncing back of light from a surface is called:
Reflection is the bouncing back of light when it strikes a surface.
A ray of light strikes a mirror making an angle of incidence of 40°. The angle of reflection is:
By the law of reflection, the angle of reflection equals the angle of incidence, 40°.
A girl stands 1 m in front of a plane mirror and walks 0.5 m towards it. The distance between her and her image is now:
She is now 0.5 m from the mirror, the image 0.5 m behind it, so they are 0.5 + 0.5 = 1 m apart.
Light — FAQs
What are the key concepts in Class 8 Science Light?+
This chapter covers reflection of light, image formation in mirrors, the human eye, and care of the eyes. Key ideas include Laws of reflection, Regular vs diffused reflection, Images in a plane mirror, The human eye, Care & aids.
What does Class 8 Science Chapter 13 (Light) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Light" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "Light" questions free to practise?+
Yes — sign in with Google to practise "Light" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Light" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Practise all 72 questions free
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