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Q. Explain what is light?
Light is certainly electromagnetic radiation but the expression electromagnetic radiation is by no means an explanation of what light is. Light is a wave that which is "waving" (varying in a repetitive fashion in both time and space) is an electric field and a magnetic field. Light isn't matter. An electric field isn't matter. A magnetic field isn't matter. Light contains of both electric and magnetic fields that vary in both time and space in a regular repetitive matter. Since electric and magnetic fields aren't matter light can't be matter. Since light isn't matter, it can't consist of and doesn't consist of charged particles. Vacillate charged particles do cause light but they themselves are not light.
Because force=dp/dt and force=0 in first law of motion => dp/dt=0 => p=const. or linear momentum is conserved.
Does a piece of glass reflect more light than a piece of paper?
A locus formed by joining the points which are at the equal distance from the source....is called wavefront...
if a big person and a small person run up the stairs in the same time, which of them develops the most power
what are like and unlike parallel force?
Classical Mechanics and Electromagnetism Classical Mechanics , which study with the motion of bodies under the action of forces. This is often known as Newtonian mechanics as
a drawing pin is pushed against a wooden table with force of 10N. calculate the pressure exerted by the pin at a point on table if area of point is 0.01m square
The characteristic of a body by virtue of which the body takes its real configuration when external deforming forces are removed is called as elasticity.
an orchestra tunes up for the big concert by playing an A, WHICH RESOUNDS WITH A FUNDAMENTAL FREQUWNCY OF 440HZ FIND THE SECOND AND TIRD HARMONICS OF THIS NOTE
Convex lens can be used as a magnifying glass. When an object that is 15.0 cm from the lens has an image that is exactly 55 times the size of the object, what is the focal leng
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