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What is the difference between a lens and a mirror?
A mirror is a reflective surface. Light passes by the glass and hits the silver backing, reflecting off of it. (The angle of reflection equals the angle of incidence.)
A lens, on the other hand, does not reflect light; it refracts it. After entering the glass, light refracts in a different way depending on the shape of the lens and also makes a focal point where the refracting light comes to a point. This varies for different lenses -- convex or concave -- which is why there are dissimilar lenses for different types of eyeglasses.
A charge of 111 pC is uniformly distributed throughout the volume of an isolated sphere of diameter 40 cm. Calculate the electric field at the following distances from the centre o
The capacitors can be classified on the basis of nature of value, type of dielectric material used and polarity. On the basis of nature of value: Fixed value capacitor
applications of polarisation with explanation
how to arrange a magnetometer in tan a postion
Differentiate between displacement current and conduction current.
What is Joule Cycle? Find the efficiency of the Joule cycle, consisting of two isobars and two adiabats. Presume that the heat capacities of the gas C p and C v are constan
(i) A matter pulse is not electromagnetic in behavior. (ii) Practical observation of matter waves is possible only when the de-Broglie wavelength is of the order of the size of
why wouldn''''t you be electrocuted if you walked under an electric transmission line during a rainstorm?
The world is derived from the Greek world which means to squeeze or press. It is usually described as the generation of electricity as a result of mechanical pressure. "When mechan
Length Contraction is Invisible This series of animations describes that the relativistic length contraction is invisible.
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