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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.
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?
filled observation of youngs modulus using searles apparatus
Disadvantages of A.C. Transmission of power 1. An a.c. line needs more copper than a d.c. line. 2. The construction of an a.c. transmission line is more complex than d.c. tr
1]What is the difference between a photon and a neutron? 2]Why are they massless?
with the help of diagram explain the working of newton''s ring
Q. Will a DC motor really produce voltage if it is spun in reverse? Answer:- It will produce voltage if you spin it forwards too. The merely difference between a DC motor
Derive the Einstein Relation From the laws of thermodynamics, electrons carry a thermal energy equal to 1/2 kT per degree of freedom. Use this value to derive the Einstein's r
An aereplane has velocity 500m/s with respect to air. Wind blows with velocity 20m/s along north. Then in what direction pilot should be heading so as to go along North-east direct
A child's toy train moves at a constant speed of 2.0 cm/s. a. Illustrate the position-time graph showing the position of the toy for 1.0 min. b. What is the slope of the lin
What is Slowly Leaking Box? An ideal gas of atoms of number density at an absolute temperature is restricted to a thermally isolated container that has a small hole of area A
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