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Refraction of Light:
When a ray of light in single medium meets the surface of second medium, a part of the ray enters in the second medium; this phenomenon is called as refraction of light.
Q. Double convex lenses are to be manufactured from a glass of refractive index1.55, With both faces of the same radius of curvature. What is the radius of curvature? Required if
Suppose that the x rays are emitted from a focal spot isotropically. The photon flux is 3.28 x 10 6 photons mm -2 sec -1 at a distance of 0.75 m from the focal spot. What is the
Explain Squirrel- cage rotor Squirrel- cage rotor having of a slotted laminated core of sheet-steel. The slots of the rotor are not always parallel to the slots on the stator,
siemens; S (after E.W. von Siemens, 1816-1892): The derived SI unit of electrical conductance equivalent to the conductance of any element that contain a resistance of 1 O [oh
What is a thin prism? Write the mathematical expression for deviation produced by a thin prism.
why we called it
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.
Can the whole charge of a body is transfer to another body
How is a wave front dissimilar from a ray ? Draw the geometrical, shape of the wave fronts when (i) light diverges from a point source, and (ii) light emerges out of a convex le
All solar cells require a light absorbing material contained within the cell structure to absorb photons and generate electrons via the photo voltaic effect. The materials used in
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