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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 incidence is zero an it depend onthe wave lenght of the light.
Mica is a (A) Dielectric material. (B) Insulating material. (C) Magnetic material. (D) Both insulating and dielectric material. Ans: Mica is a both insulating and
Which of the following material has the highest melting point (A) Copper. (B) Aluminium. (C) Tungsten. (D) Gold. Ans: Tungsten has the highest melting point.
Q. What are de Broglie waves? Matter in motion should be accompanied by waves called de Broglie waves. de Broglie wavelength λ = h / mv
when a soft iron piece is buried under the surface of earth in the north south direction why the iron piece show properties of a magnet
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what is the force?
A plane e-m wave propagates horizontally from east to west. If the magnetic field related with the wave, at a point in its path, is towards north, what is the direction of related
A block initial located 3m up a frictionless inclined plane is given an initial velocity of 6m/s up the ramp. The plane is 10m long and titled by 30 degree. a) How long does it tak
A negative point charge 10 -8 coulomb is located in air at the origin of a rectangular coordinate system. What is the electric field intensity at a point on the positive x directi
To develop the correct mathematical explanation of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature. Planck found it essent
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