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what is the angle of incidence when the refracted and the reflected ray are parallel to one another? does this angle depend on the wavelength of light? Ans) The angle of inciden
what are like and unlike parallel force?
A solid cylinder of radius 12.1cm and mass 20.2kg starts from rest and rolls without slipping a distance of 6.14m down the house roof that is inclined at 25.3° relative to the hori
Two boxes are in contact on a flat table. A force of 75.8 N is applied horizontally to the first box, which in turn pushes horizontally against the second box. The mass of the firs
Constancy principle (A. Einstein): One of the postulates of A. Einstein's special theory of relativity, that puts forth that the speed of light in vacuum is calculated as the
after 1sec of projectile makes an angle of 45 with the horizontal after another 1 sec travelling horizontally find magnitude of initial velocity and angle of projection
What do we denote when we say that a capacitor has an amount of charge Q on it? Answer: If we obtain the expression the charge on the capacitor too accurately the value is
a wave of eqn y=0.005sin(8x-3t).find displacement when x=0.3 t=20s?in the answer given y=0.005sin(80*3-0.3*20)= y=0.005sin(-36+12pi).what is this 12pi?
Given the ratio of velocities of two light waves traveled in vacuum and having wave lengths 5000A o and 6000A o . Can you explain by working of diamonds sparkle?
Can you explain Doppler effect? Find a mathematical expression for the apparent frequency heard when the source is in motion and the listener is at rest and also give limitation of
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