Chapter: Science8 Light Mirrors and Lenses…

✓ Free notes class 8 Science 1 study file

About these notes

Class 8 Science Light Mirrors and Lenses notes give clear definitions, labelled diagrams and step-by-step ray-diagram rules so you can revise plane mirrors, spherical mirrors (concave, convex) and lenses (convex, concave). Main sub-topics: laws of reflection, image in plane mirror, ray rules for concave and convex mirrors, principal focus (F) and pole (P), ray-diagrams for lenses, real vs virtual images, and common uses of mirrors and lenses. Ideal for CBSE and Bihar Board Class 8 students preparing for school exams; use these notes with chapter test and mock tests on Merit Spring ROH and practise important questions, MCQ and question answer drills.

Key points you will learn

Class 8 Science Light Mirrors and Lenses notes — laws of reflection and ray-diagram rules
Law of reflection: angle of incidence = angle of reflection (θi = θr)
Plane mirror image: virtual, erect, laterally inverted; image distance = object distance from mirror
Concave mirror rules: parallel → through F; through F → parallel; through centre → retraces; image real/inverted or magnified depending on object position
Convex mirror behaviour: always virtual, erect and diminished; useful as rear‑view mirrors
Lens ray rules for convex and concave lenses: parallel ray through focus, ray through centre undeviated
Exam tip: practise at least five labelled ray diagrams and always mark P, C (centre) and F clearly

What is inside this chapter

📄

Science8 Light Mirrors and Lenses Notes (Class 8 Science)

Class 8 Science Science8 Light Mirrors and Lenses handwritten-style revision notes for CBSE and Bihar Board students.

📥 Open notes

Questions students ask

What is covered in Class 8 Science Light Mirrors and Lenses notes?

The notes summarise laws of reflection, image formation in plane, concave and convex mirrors, ray-diagram rules for lenses, principal focus and common uses, with labelled diagrams and quick revision points.

Where to find Class 8 Science Light Mirrors and Lenses notes and important questions?

Find the chapter notes on Merit Spring ROH where diagrams and definitions are grouped for revision; for important questions, MCQ and chapter test practice use the site’s chapter tests and mock tests sections to check your preparation.

How to draw ray diagrams for a concave mirror?

Draw three principal rays: one parallel to the principal axis reflecting through F, one through F reflecting parallel, and one through centre of curvature which retraces; label pole (P), principal focus (F) and centre (C).

Difference between real and virtual images?

A real image is formed where rays actually meet and can be projected onto a screen; a virtual image is formed by apparent intersection of rays and cannot be projected (plane mirror gives virtual image).

How should I revise this chapter for exams?

Revise by memorising the laws of reflection, drawing several accurate ray diagrams for different object positions, listing uses of each mirror/lens, and practising MCQ, important questions and chapter tests on Merit Spring ROH to build speed and accuracy.

More Science chapters

Chapter: Science8 Exploring the Investigative World of Science Chapter: Science8 The Invisible Living World Chapter: Science8 Health The Ultimate Treasure Chapter: Science8 Electricity Magnetic and Heating Effects Chapter: Science8 Exploring Forces Chapter: Science8 Winds Storms and Cyclones All chapters →

class 8 — other subjects

ENGLISH Social Science

Merit Spring App install karein

App Theme