surface normals

If the electric field is not normal to the surface, then it would have same non-zero component along the surface. The free charges on the surface would then experience a force and move. In a static situation, electrostatic field should not have tangential co..

The perpendicular drawn to the surface of separation at the point of incidence is called the normal..

Reflection of Light by a Plane Surface - The figure shows how a ray of light is reflected by a plane surface. Let MM' represent a reflecting surface. When a ray of light is incident on MM' in the direction IO it gets reflected along the direction OR. IO is the incident..

The figure shows how a ray of light is reflected by a plane surface. Let MM' represent a reflecting surface. When a ray of light is incident on MM' in the direction IO it gets reflected along the direction OR. IO is the incident ray; O is the point of incidence and OR is the re..

The incident ray, the reflected ray and the normal at the point of incidence all lie in the same plan..

Urban activities generate large quantities of city wastes including several Biodegradable materials (like vegetables, animal wastes, papers, wooden pieces, carcasses, plant twigs, leaves, cloth wastes as well as sweepings) and many non-biodegradable materials (such as plastic bags, plastic bottles,..

As we know, the electrostatic field inside the conductor is zero and on the surface, the electrostatic field is normal to the surface at every point. No work is done in moving a small test charge, within the conductor and on its surface. We find there is no ..

Magnetic Flux - We have already seen how the concept of electric flux helped us to learn the electric field intensities around the charges. Similarly concept of magnetic flux too helps us to calculate magnetic field strengths around magnets or current carrying conductors. Let us consider a sur..

The incident ray, the refracted ray and the normal to the surface at the point of incidence all lie in one plan..

Question: What is the angle of incidence if a ray of light is incident normal to the surface separating the two media? Answer: Angle of incidence is equal to zero if a ray of light is incident normal to the surface separating the two medi..