Download CBSE Class Physics 12 Pre-Board Sample Papers 2025–26 with solutions for all subjects in free PDF format. These papers are curated by experts as per the latest CBSE syllabus and exam pattern.

Learn how concave mirrors form images with a clear, step-by-step explanation that makes the mirror equation easy to understand. This lesson covers ray diagrams, focal length, image position, and ...

Today we're looking at Atomic Force Microscopy! I built a "macro-AFM" to demonstrate the principles of an atomic force microscope, then we look at a real AFM (an nGauge AFM from ICSPI) and do a few ...

A mighty 20x magnification might seem like a big reason for buying the Celestron EclipSmart 20x50mm Porro solar binoculars over all others. In practice, however, their size makes them difficult to ...

For centuries, lenses have worked the same way: curved glass or plastic bending light to bring images into focus. But traditional lenses have a major drawback—the more powerful they need to be, the ...

From magnification to letting in enough light at night, here's how to choose the perfect monocular for stargazing and astronomy. When you purchase through links on our site, we may earn an affiliate ...

Rare depictions of Stone Age net fishing have surfaced on engraved stones thanks to an imaging technique that gives magnification a digital boost. Previously unnoticed lines etched into eight stones ...

From the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics experiments that changed the world. When you purchase through links on our site ...

On the morning of June 28, 1914, a Bosnian Serb student named Gavrilo Princip stood outside Moritz Schiller’s delicatessen near the Latin Bridge in Sarajevo. Sometime after 10:45 A.M., a motorcade ...

Android 15 is adding a two-finger double-tap screen gesture that magnifies the screen. The operating system’s built-in magnification feature can already be launched through an on-screen button, volume ...