(vii) For a real image formed by a convex lens, the ratio of I: O = 2: 5, then the object is: (I is the height of the image and O is the height of the object) (xi) Assertion (A): As the level of ...

ISC Class 12th Physics Answer Key 2025 ... Read the two statements and choose the correct option. Assertion: When a convex lens made of glass is completely immersed in water, its focal length ...

New quadrupole magnets for the High-Luminosity LHC will use Nb3Sn conductors for the first time in an accelerator.

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics ...

Nikon’s Z-series lens line-up has never been healthier. If you’re shooting with one of the best Nikon cameras, you’ll want to pair it with the best glass you can buy. That’s exactly what ...

\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.

The most commonly used and the earliest example of an achromatic lens is the achromatic doublet. An achromatic doublet is made from a pair of glasses, of which one is typically a concave and another ...