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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 multiplication fact can be found by using the arrays or 2times9 and 5times9?
Ferrites are (A) Ferromagnetic material. (B) Ferrimagnetic materials. (C) Anti ferromagnetic material. (D) Diamagnetic materials. Ans: Ferrites are ferro
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
How is sensitive flame method used for detection of ultrasonic waves? Sensitive flame method: A narrow sensitive flame is shifted along the medium. At the situations of anti
Why does it take longer to heat a bucket of water than a cup of water? Because there is extra water in a bucket than in a cup, and more energy has to be put into the bucket of
It uses in electric cooling devices, turbines ...........etc
An object is placed at a distance of 0.12m from a convex lens forms an image at a distance of 0.18m. Determine the magnification produced.
Explain the Nuclear Notation? Chemical reactions deal with the number of electrons exchanged or shared. Nuclear reactions, on the other hand, involve protons and neutrons and
A ring forming a magnetic circuit is made from two materials; one part is mild steel of mean length 25cm and cross-sectional area 4cm 2 , and the remainder is cast iron of mea
If a force applied on a body causes a alteration in the normal positions of the molecules of the body, resulting in a alteration in the configuration of the object either in length
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