Q. Lens is made up of which glass
A) Pyrex glass
B) Ordinary glass
C) Cobalt glass
D) Flint glass
✔ Correct Answer: Flint glass
Exam Insight
-
Related Questions
See also
Article
- Bajrang Setu-ऋषिकेश, उत्तराखंड, गंगा नदी पर
- Indian Air Force Approves Production of Astra Mark 1 Missiles
- Network Readiness Index 2024: Global Insights on Digital Transformation
- Goa Declared Fully Literate Under ULLAS Karyakram
- Delhi-Lahore Conspiracy Case - 23 December 1912
- India 2025 Environment Report: Mixed Outlook on Challenges, Progress, and Sustainability
- Delhi's New Chief Minister Atishi Marlena
- KAKOLAT WATERFALL - NAWADA
- Kariba Dam Floating Solar Project 2026 – Located on Which River?
- Bihar Famous Litti Chokha Recipe | Litti Recipe| How to Make at Home
- Sandeshkhali accused and TMC neta Shahjahan Sheikh arrested by Bengal police on February 29
- Sensex and Nifty Fall: Stock Market Slumps Amid Global Cues, Rupee Hits Record Low
- Maldives again comes in relationship with India- S Jaishankar and president Mohamed Muizz meet together on 9 Aug.
- After BRI Project Exit, Italy's PM Giorgia Meloni Signs Economic Pact In China
- Govt of India Appointed ONGC New Director Arunangshu Sarkar
- India Semiconductor Partnership with USA - Stock Jumped after PM Modi speaks about India’s semiconductor future
- Lord Hardinge II (1910-1916): British Viceroy of India – Policies, Impact & Legacy
- RRB Section Controller Recruitment 2025: Complete Guide & Apply Online before 14 October
- Budget 2024
- Rajsi Verma (Ullu Actress) – Biography, Web Series List, Career & Bold Roles
- Dirac Medal 2026: Deepak Dhar Wins Prestigious ICTP Award | UPSC Current Affairs
- Tutors Near Me | Find Private Tutors & Online Tutoring
- IC814 Flight Hijack/ Kandhar Hijack Web stories- Kandhar Hijack
- Khakee: The Bengal Chapter – Everything You Need to Know
- President's Rule Imposed in Manipur: Political Crisis and Ethnic Violence Lead to Central Takeover
- City-Killer Asteroid 2024 YR4 on Potential Collision Course: 2.3% Impact Chance in 2032, India Among Risk Zones
- UPSC CDS Exam Preparation Guide: Complete Syllabus, Strategy & Tips for 2025
Post
Info
- सिलिकन
- सातवाहन काल के शीशे के सिक्के: प्राचीन भारत की दुर्लभ मौद्रिक परंपरा
- Action-Packed Sequences: Crafting Thrilling Scenes in Film and Television
- The Phoenicians: Master Mariners, Traders, and Innovators of the Ancient World
- Exploring Material Science: Innovations, Applications & Future Trends
- Arsenic: Element 33 – Properties, Uses, and Risks
- The Sweet World of Jam: A Culinary Delight
- Easy Homemade Strawberry Jam Recipe & Canning Guide | Perfect Preserves
- Understanding the Meaning and Significance of 33 (तीसतीन) in Hinduism
- Ancient Traditions: Exploring the World's Enduring Customs
- Understanding Personality: Traits, Types, and Development
- Presidential Approval Ratings: Tracking Public Opinion
- Constitutional Nationalism: A Deep Dive
- Presidential Approval Ratings: Tracking Public Satisfaction
- Culture and Religion: A Complex Intertwined History
- Cultural Considerations: Navigating Global Diversity for Success
- The Silent Demise: Understanding Lost Languages and Their Impact
- Multidisciplinary Approach: Solving Complex Problems Through Collaboration
- The Fascinating World of Human Languages: Diversity, Evolution, and Impact
- Exploring the Enigma: The Cyrillic String Гғ ГӮВӨГӮВё...ГӮВӨГӮВҸ
- Understanding Unusual String Identifiers: Decoding '√†¬§¬°√†¬§Ňď√†¬§Ňł√†¬§¬≤-√†¬§¬≠√†¬§¬į√†¬§¬§'
- How to Capitalize the First Letter of a String in SQL: CONCAT, UPPER, SUBSTRING
- समॆ-गो-गोय-नैक्य: A Vision for Unity and Inclusive Progress in India
- Decoding the Enigmatic String: ├Г┬Г ├Г┬В├В┬д... and Mojibake Phenomena
- Decoding the Unicode String: "ä ¤® ä—ï- ä¡ ä¨ ä¤ï" and Mojibake Issues
- Exploring the Sweet World of Fruit Jams and Preserves
- Daal Chawal: A Staple Indian Dish - Recipe & History
- Governor's Report: State of the State Address & Key Findings
- Exploring the Sweet World of Jam: A Guide to Fruit Preserves and Homemade Delights
- Deciphering Hieroglyphs: Unlocking Ancient Egyptian Writing
📚 Explore Knowledge
Browse Articles by Category
Explore educational articles, current affairs, science, technology, history, politics, business and hundreds of learning resources organized into categories.
39
Categories
📘
International Relation
📘
World News
📘
India News
📘
Current Affairs General Awareness
📘
Entertainment
📘
Sports
📘
Movies
📘
Food
📘
Technology
📘
Games
📘
Shopping
📘
Business
📘
Health
📘
Politics
📘
History
📘
Geography
📘
Science And Technology
📘
Social
📘
Reviews (Books, Movies, Music, Etc.)
📘
Career
📘
Education
📘
Research
📘
News
📘
Blog
📘
Research Journals
📘
Documentary
📘
Cybersecurity
📘
Space
📘
Environment
📘
Medicine
📘
Economics
📘
Literature
📘
Philosophy
📘
Religion
📘
Arts And Culture
📘
Beauty
📘
Fashion
📘
Travel
📘
Other
🎯 Popular Topics
Explore the most searched educational topics.
🚀 Find Jobs by State & Department
Explore Sarkari Jobs, Admit Cards & Results easily on TutorliV
🔥 Popular Job Categories
UPSC
SSC
POLICE
DEFENCE
BANK
SPSC
JUDICIARY
AllIndia
ANDHRA PRADESH
ARUNACHAL PRADESH
ASSAM
BIHAR
CHHATTISGARH
GOA
GUJARAT
HARYANA
HIMACHAL PRADESH
JAMMU AND KASHMIR
JHARKHAND
KARNATAKA
KERALA
MADHYA PRADESH
MAHARASHTRA
MANIPUR
MEGHALAYA
MIZORAM
NAGALAND
ODISHA
PUNJAB
RAJASTHAN
SIKKIM
TAMIL NADU
TELANGANA
TRIPURA
UTTARAKHAND
UTTAR PRADESH
WEST BENGAL
ANDAMAN AND NICOBAR
CHANDIGARH
DADRA AND NAGAR HAVELI
DAMAN AND DIU
DELHI
LAKSHADWEEP
PUDUCHERRY
📚 Subject-wise MCQs Practice
Practice topic-wise MCQs for competitive exams like SSC, UPSC, Banking & more.
General Knowledge
Mathematics
Reasoning
Physics
Chemistry
English
General Science
Biology
Indian History
World History
Indian Geography
World Geography
Polity
Economics
Sociology
Political Science
Sports
Famous Places
Awards and Honours
Famous People
Day and Event
Books and Authors
Current Affairs
Computer Knowledge