This is the Evergreen CBSE Physics Lab Manual for Class 12, prepared for the practical component of the CBSE Class XII physics course. It is an English medium (Roman script) book — the complete text, procedures, observation tables and viva questions are in English, and there is no Hindi content in it. The cover states that it follows the syllabus issued by CBSE on 21.04.2022 vide Circular No. Acad-48/2022, and web support is available.
The practical examination carries 30 marks in Class 12 physics, and those marks are lost more often to poor recording than to poor experimenting. A lab manual is what closes that gap. This book sets out each prescribed experiment in the form the examiner expects to see in the record file: aim, apparatus required, theory with the working formula, circuit or ray diagram, procedure step by step, observation table laid out with the correct columns and units, calculation, result stated with its unit, precautions and sources of error. The Class 12 set covers the resistivity and resistance experiments with metre bridge and potentiometer, the galvanometer conversions and resistance measurements, focal length of concave mirror and convex lens, refractive index of a glass slab and prism, and the semiconductor experiments — diode and Zener characteristics — along with the prescribed activities and project work.
Two parts of this book do the work a textbook cannot. The viva voce questions with answers, arranged experiment by experiment, cover what the external examiner actually asks — the principle behind the experiment, why a particular precaution matters, what would happen if a connection were reversed. And the sources of error and precautions sections give the student the answers that separate a complete record from a copied one.
This is a practical companion, not a theory book. It is used alongside the NCERT Class 12 physics textbooks, which carry the theory the experiments rest on.
Key Features:
English medium book — complete content written in English (Roman script), no Hindi content
Published by Evergreen Publications
CBSE Physics Lab Manual for Class 12 (Class XII)
Strictly according to the new syllabus issued by CBSE on 21.04.2022 vide Circular No. Acad-48/2022
Covers all prescribed Class 12 physics experiments
Each experiment set out with aim, apparatus, theory and working formula
Circuit diagrams and ray diagrams for every relevant experiment
Step-by-step procedure with observation tables in the correct format
Calculation, result, precautions and sources of error for each experiment
Covers metre bridge, potentiometer and resistivity experiments
Covers galvanometer — resistance, figure of merit and conversions
Covers optics — focal length of mirror and lens, refractive index of slab and prism
Covers semiconductor experiments — diode and Zener diode characteristics
Prescribed activities and project work guidance included
Viva voce questions with answers, arranged experiment by experiment
Web support available
For the 30-mark Class 12 physics practical examination
Used alongside the NCERT Class 12 physics textbooks
यह पुस्तक एवरग्रीन पब्लिकेशन्स द्वारा CBSE कक्षा 12 भौतिक विज्ञान के प्रायोगिक पाठ्यक्रम हेतु तैयार की गई प्रयोगशाला पुस्तिका (Physics Lab Manual) है। ध्यान दें: यह पुस्तक पूर्णतः अंग्रेज़ी भाषा एवं रोमन लिपि में है — इसमें हिन्दी भाषा का प्रयोग नहीं है। यह CBSE द्वारा 21.04.2022 को परिपत्र संख्या Acad-48/2022 के अंतर्गत जारी नवीन पाठ्यक्रम के अनुसार है। इसमें प्रत्येक निर्धारित प्रयोग उसी प्रारूप में दिया गया है जो परीक्षक रिकॉर्ड फाइल में अपेक्षित करता है — उद्देश्य, आवश्यक उपकरण, सिद्धांत एवं सूत्र, परिपथ/किरण आरेख, चरणबद्ध विधि, सही स्तंभों एवं मात्रकों सहित प्रेक्षण सारणी, गणना, परिणाम, सावधानियाँ तथा त्रुटि के स्रोत। मीटर सेतु एवं विभवमापी, धारामापी संबंधी प्रयोग, प्रकाशिकी (दर्पण एवं लेंस की फोकस दूरी, अपवर्तनांक) तथा अर्धचालक (डायोड एवं ज़ेनर डायोड) प्रयोग सम्मिलित हैं। प्रत्येक प्रयोग के साथ मौखिक परीक्षा (viva voce) प्रश्न-उत्तर भी दिए गए हैं। कक्षा 12 भौतिक विज्ञान में प्रायोगिक परीक्षा 30 अंकों की होती है और अंक प्रायः प्रयोग करने में नहीं, अपितु उसे सही प्रारूप में लिखने में खोए जाते हैं — यही पुस्तक उस अंतर को भरती है।
