A lens can be converging (convex) or diverging (concave). The centre of the lens ... optical centre of the lens and the screen is the focal length, f. Measure this distance with a 30 cm rule ...

Check out these picture-perfect portrait primes Canon, Nikon, Sony, Fujifilm, Olympus, Panasonic, Leica and Sigma mirrorless cameras, plus plenty of budget-friendly alternatives My go-to lens for ...

Candidates planning to appear for the NEET UG exam in 2025 can find the updated syllabus here. According to a notification from Shambhu Sharan Singh, Director, UGMEB, the NEET (UG) - 2025 Syllabus ...

Here are the five best prescription glasses retailers—including one company worthy of being mentioned twice—that you can shop online, along with a helpful buying guide to help you find the ...

How public libraries shaped a nation and remain a beloved sanctuary for Americans today. Lucie Faulknor is an arts management and documentary film professional. Founder at Serendipity Films, LLC ...

a. NTA uses AI based real time analytical tools and technologies to map likely/potential use of unfair means /cheating behavior by candidates at all centres, both during and post exams. b. CCTV ...