This book is the Evergreen CBSE Physics Lab Manual for Class 11 (Class XI), published by Evergreen Publications as per the latest guidelines of the CBSE and the New National Education Policy 2020. It is an English medium (अंग्रेज़ी माध्यम) book, written entirely in English (Roman script), with no Hindi content. The lab manual covers the complete Class 11 Physics practical syllabus — experiments on vernier callipers, screw gauge and spherometer, measurement of mass, length and time, simple pendulum, Young's modulus, surface tension, viscosity, Newton's law of cooling, speed of sound by resonance tube, specific heat capacity and related experiments — along with the prescribed activities, project work and sections A and B of the practical course. Each experiment is set out with aim, apparatus required, theory and formula, procedure, observation tables, calculations, result, precautions and sources of error, with clear diagrams for the practical file, plus viva voce questions for the practical examination. Web support is available. Key Features: English medium book — complete content written in English (Roman script), no Hindi content Published by Evergreen Publications As per the latest CBSE guidelines and NEP 2020 Covers the complete Class 11 (Class XI) Physics practical syllabus, Sections A and B Experiments set out with aim, apparatus, theory, procedure, observation and result Calculations, precautions and sources of error given for every experiment Clear labelled diagrams and ray/circuit figures for the practical file Measurement experiments using vernier callipers, screw gauge and spherometer Experiments on simple pendulum, Young's modulus, surface tension and viscosity Experiments on Newton's law of cooling, speed of sound and specific heat capacity Prescribed activities and project work guidance included Viva voce questions for practical examination preparation Web support available Suitable for CBSE Class 11 practical examination and internal assessment 'Evergreen CBSE Physics Lab Manual for Class XI' Evergreen Publications द्वारा प्रकाशित है और यह नवीनतम CBSE दिशा-निर्देशों एवं राष्ट्रीय शिक्षा नीति 2020 के अनुसार तैयार की गई है। इसमें कक्षा 11 (Class XI) के भौतिक विज्ञान (Physics) विषय का सम्पूर्ण प्रायोगिक पाठ्यक्रम — वर्नियर कैलिपर्स, स्क्रू गेज एवं स्फेरोमीटर द्वारा मापन, सरल लोलक, यंग प्रत्यास्थता गुणांक, पृष्ठ तनाव, श्यानता, न्यूटन का शीतलन नियम, अनुनाद नली द्वारा ध्वनि की चाल तथा विशिष्ट ऊष्मा धारिता जैसे प्रयोग, गतिविधियाँ एवं प्रोजेक्ट कार्य — कवर किया गया है, साथ ही प्रत्येक प्रयोग हेतु उद्देश्य, विधि, प्रेक्षण सारणी, गणना, परिणाम, सावधानियाँ, चित्र एवं वाइवा प्रश्न भी दिए गए हैं। ध्यान दें: यह पुस्तक पूर्णतः अंग्रेज़ी भाषा एवं रोमन लिपि में है, हिन्दी में नहीं।