Light — Class 8 MCQs with Answers
Class 8 CBSE Science · Chapter 113
Pre-2026 syllabusThis chapter is from the older NCERT book. See the 2026-27 Class 8 Science chapters →
72 practice questions · 24 Easy · 24 Medium · 24 Hard · Updated
Jump to the 6 solved questions
Practise the most important Class 8 CBSE Science questions from Chapter 113, "Light". You get 6 timed quizzes made from 72 NCERT-based MCQs, with answers and explanations. The questions are split into 24 Easy, 24 Medium and 24 Hard. Warm up on the basics, then move on to the exam-level questions that top scorers in CBSE Board exams get right.
To score well in "Light", focus on clear concepts in physics, chemistry and biology basics. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This helps you stay accurate when time is short, just as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Light, then move to Medium and Hard to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 8 Science mastery score. Try the 6 sample questions below: tap an option to see the answer and a worked explanation. Sign in free to start practising.
Light — important questions & MCQs with answers (Class 8 Science)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. Tap an option to check yourself.
0 of 6 answered
- Q1 of 6Easy
Light travels in:
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Answer: Straight lines
Explanation: Light travels in straight lines.
- Q2 of 6Easy
The image formed by a plane mirror is:
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Answer: Virtual and erect
Explanation: A plane mirror forms a virtual, erect image of the same size as the object.
- Q3 of 6Medium
When white light passes through a glass prism, it forms a band of colours because the prism:
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Answer: Splits (disperses) white light into its component colours
Explanation: A prism disperses white light into the seven colours that make it up.
- Q4 of 6Medium
In bright light the pupil becomes small, while in dim light it becomes large. This is controlled by the:
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Answer: Iris
Explanation: The iris adjusts the pupil's size to control how much light enters the eye.
- Q5 of 6Hard
A periscope and a kaleidoscope both rely on the same basic principle, which is:
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Answer: Reflection of light by plane mirrors
Explanation: Both use reflection from plane mirrors — a periscope for seeing over obstacles, a kaleidoscope for patterns.
- Q6 of 6Hard
Braille is to a visually impaired person what print is to a sighted person. The key idea is that Braille:
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Answer: Encodes letters as touchable raised-dot patterns that can be read with fingers
Explanation: Braille represents letters and numbers as raised dots read by touch, replacing visual reading.
Light notes: key concepts (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.
Start this chapter free
You have 6 to try above. Sign in with Google (no card needed). You get 1 Easy + 1 Medium quiz on every chapter, free for good (up to 6 quizzes a day) — plus a free Hard quiz when you score 70%+ on a Medium quiz (1 per subject), and the formulas & exam tips.
This chapter has 72 questions (24 Easy · 24 Medium · 24 Hard), with timed scoring and instant feedback. The rest unlock with the ₹999/year plan.
Start with the questions above. The full quiz opens here after.
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 113 (Light) cover on XamBaaz?+
It has 72 NCERT-based MCQs on "Light": 24 Easy, 24 Medium and 24 Hard. Together they make 6 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare 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. One year from the day you pay. You stay in Class 8 till 31 March; on 1 April your account moves up to Class 9 and the rest of your year carries over. No chapter is charged separately.
How should I revise "Light" for the exam?+
Start with the Easy quiz to check your basics, then try Medium and Hard to practise applying them. There are 6 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Light" MCQs available with answers?+
Yes. 6 sample questions are on this page with answers: tap an option, or "Show answer", to see the correct option and a step-by-step explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Light" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Light (Class 8 Science)?+
The questions that matter most test Laws of reflection, Regular vs diffused reflection, Images in a plane mirror, The human eye, Care & aids. This page shows 6 solved important MCQs with answers and explanations. Sign in to practise all 72 questions on the chapter as timed quizzes.
Is there an online quiz for Light?+
Yes — Class 8 Science Light has timed online quizzes at Easy, Medium and Hard levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.
Are there question answers and extra questions for Light (Class 8 Science)?+
Yes. This page has 6 solved questions on Light, each with the correct answer and a short explanation. Sign in to practise all 72 questions on the chapter as timed quizzes.