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Fermat's principle; principle of least time (P. de Fermat):
The principle put by P. de Fermat, which states the path taken through a ray of light among any two points into a system is always the path which takes the least time.
Making a shadow stick In an open space on the school ground drive a 130 cm stick into the ground and let the children stay a record of the length of the shadow, calculated two
A force of 25 N is applied vertically at the end of a wrench handle that is 45 cm long to tighten a bolt in the clockwise direction. What torque is required by the bolt to keep the
Q. Figure s (a) and (b) show refraction of a ray in air incident at 60°with the normal to a glass Answer According to the given figure for the glass-air interface:
assiament on kinametics theory of gas
Two Stage Rocket Suppose the motion of the two-stage rocket or the corresponding velocity-time graph below. The rocket has two successive fuel stages followed through a free-fa
Determination of packing fraction of diamond The co-ordination number of an atom in diamond structure is 4 as can be seen from the unit cell of diamond and is loosely packed.
Get an expression for the fringe width in the interference pattern due to Young's double slit.
Heat is the energy that is operated because of differences in temperature among the body and the surrounding. The unit of heat energy is Joule. The basic difference among study
why the reflective index of cladding is lower then in core of a fiber optic?
What do you understand by reverberation? Who is the founder of architectural acoustics? What is Newton's formula for velocity of sound in a gas? How is it corrected by Laplace?
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