Class 8 Science — Chapter 10: Light: Mirrors and Lenses
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise the most important Class 8 Science questions from Chapter 10, "Light: Mirrors and Lenses" — 72 NCERT-aligned multiple-choice questions with answers and explanations. The set is split into 24 Easy, 24 Medium and 24 Hard, 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: Mirrors and Lenses" 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 (+4 correct, −1 wrong, 0 skipped), training the same negative-marking 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: Mirrors and Lenses, 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 sample question is shown below; sign in free to see its answer and practise all 72.
Key concepts: Light: Mirrors and Lenses (Class 8 Science)
This chapter is about how mirrors and lenses form images of objects using light. Reflection obeys two laws — the angle of incidence equals the angle of reflection, and the incident ray, reflected ray and normal lie in one plane. A plane mirror forms an erect, same-size, virtual and laterally inverted image. Spherical mirrors are concave (converging — a magnified erect image when the object is close, used in torches and shaving mirrors) or convex (always erect and diminished with a wide view, used as rear-view mirrors). Lenses, which let light pass through and refract it, are convex (a magnifying glass) or concave (always erect and diminished).
- Reflection
- The bouncing back of light from a surface; it lets us see non-luminous objects by the light they reflect into our eyes.
- Laws of reflection
- First, the angle of incidence equals the angle of reflection; second, the incident ray, the reflected ray and the normal all lie in the same plane. They hold for all mirrors.
- Normal and angles
- The normal is the perpendicular at the point where the ray strikes; the angle of incidence and angle of reflection are both measured from this normal.
- Plane mirror image
- A plane mirror forms an erect, same-size, virtual image, as far behind the mirror as the object is in front, with left and right swapped (lateral inversion).
Try a sample question
One free sample from this chapter — sign in to check your answer and practise the rest.
A ray strikes a mirror with an angle of incidence of 40°. The angle of reflection is:
Unlock the full chapter — free
See the answer and solution to this question, then practise all 72 questions (24 Easy · 24 Medium · 24 Hard) with timed scoring and instant feedback, plus the complete key-concept notes, formulas & exam tips. Sign in with Google — no card needed.
Start this chapter free →Light: Mirrors and Lenses — FAQs
What are the key concepts in Class 8 Science Light: Mirrors and Lenses?+
This chapter is about how mirrors and lenses form images of objects using light. Reflection obeys two laws — the angle of incidence equals the angle of reflection, and the incident ray, reflected ray and normal lie in one plane. A plane mirror forms an erect, same-size, virtual and laterally inverted image. Spherical mirrors are concave (converging — a magnified erect image when the object is close, used in torches and shaving mirrors) or convex (always erect and diminished with a wide view, used as rear-view mirrors). Lenses, which let light pass through and refract it, are convex (a magnifying glass) or concave (always erect and diminished). Key ideas include Reflection, Laws of reflection, Normal and angles, Plane mirror image.
What does Class 8 Science Chapter 10 (Light: Mirrors and Lenses) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Light: Mirrors and Lenses" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "Light: Mirrors and Lenses" questions free to practise?+
Yes — sign in with Google to practise "Light: Mirrors and Lenses" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Light: Mirrors and Lenses" 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.
Are these "Light: Mirrors and Lenses" MCQs available with answers?+
Yes. This page shows one sample question so you can see the format; sign in free with Google to reveal the correct option and a step-by-step "Why" explanation for it, then practise all 72 questions with instant scoring.
Is there negative marking in the "Light: Mirrors and Lenses" quizzes?+
Yes — the timed quizzes use exam-grade marking: +4 for a correct answer, −1 for a wrong one and 0 for a skipped question, so you practise the same negative-marking discipline as CBSE Board exams.
Are these important questions for Light: Mirrors and Lenses?+
The set is curated to the NCERT syllabus and weighted toward the question patterns that actually appear in CBSE Board exams, across Easy, Medium and Hard — so it doubles as an "important questions" revision list for "Light: Mirrors and Lenses".