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Refraction law:
For a wavefront travelling by a boundary among two media, the first along a refractive index of n1, and the other with one of n, the angle of incidence theta is associated to the angle of refraction phi by
n1 sin theta = n2 sin phi.
Define the Critical Angle and Fiber Optics When light is traveling in an optically dense medium, like water, and comes to the boundary of a less dense medium, like air, there a
A wheel is mounted on a stationary axle starts at rest and is given the following angular acceleration a =(9-12t) (SI units)where t is the time after the wheel begins to rotate.Fin
Ultra violet Waves: The wavelength of ultra violet wave from 380mm down to 60nm.
In a Newton's rings experiment in laboratory source of light having two wavelengths 6000Å and 4500Å is used. It is found that n th dark ring due to 6000Å coincides with
Cherenkov [Cerenkov] radiation (P.A. Cherenkov) Radiation emitted through a massive particle that is moving faster than light in the medium by which it is travelling. None of
It is desired to lessen the reflection of light by the outer surfaces of the objective lenses of a pair of binoculars. These surfaces are the foremost surfaces that light hits on e
At a distance of 4,000 ft from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 ft/sec when it
What is Normal Force?? Force exerted upon an object that is in get in touch with another stable object. If a book is resting upon a surface, then the surface is exerting an up
1. What is the principle of gas filled detectors? 2. What are nuclear radiations or particle detectors?
What are the Semiconductor Devices? A semiconductor is a material whose conductivity is much less than a conductor (such as copper), but greater than that of an insulator (such
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