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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.
Explain about the crystalline solids in short. Crystalline solids: A solid possesses rigidity with a definite geometric pattern. Illustrations: Iron, silver, copper an
A boat is traveling along a circular path having a radius of 20 m. Determine the magnitude of the boats acceleration if at a given instant the boats speed is v = 5 m/s and the rate
Que: Specified the electric potential as a function of the Cartesian coordinates x, y, and z how does one determine the electric field? Ans: If the electric potential i
Is photon a particle or a wave? What is its rest mass? Can X-ray generate photoelectric effect? Determine the work function of a metal production photo electrons with X-rays of
Q. Illustrate what two properties of electromagnetic waves are used to attach info to radio signals? Answer:- By changing the amplitude of a radio wave you can encode info
Q. Illustrate what is the direction of null vector? Answer:- There are two probable answers to this 1) It contain no direction 2) It points in every direction Ans
Has Vc a limit? Answer; precisely, but we do not know its limit. But we know it is greater than c.
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state and explain ampere''s circuital law
Displacement related with a wave is given by y (x, t) = 0.1 cos(0.2x-2t). Where x y are in cm and ‘t' in second. Determine the wavelength, amplitude, frequency and velocity.
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