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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.
The constant potential difference across a 2 ohm resistor is 20 volts. How many watts of power are dissipated by this resistor? Ans: 200 watts of power are dissipated throug
Explain Force Diagrams and Addition of Forces If you have a piano and your friend offers to help move it, would it be more helpful for him to push with 100 Newtons on the
Example like or unlike parallel forces
a) Describe how capacitance of a capacitor depends on area, distance among the plates and on the dielectric material. b) Draw electric field lines of a (i) positive poin
what is the principle on which deflection magnetometer work?
Q. What would occur if a disk one light second in circumference were to spin at 60 RPM? Answer:- 60 revolutions for each minute is one revolution per second. 1 light se
DISPLACEMENT: The change in the position of a body from its starting position to its final position is known as displacement. It is denoted by d ?.
Write the symbol sad truth table of an AND gate define how this gate is realised in practice by using two diodes.
What is the fractional change in the resistance of an iron filament when its temperature changes from 25.0°C to 50.0°C?
A transformer takes a current of 1A when its primary is connected to a 300V, 50Hz supply, the secondary being on open-circuit. If the power absorbed is 120watts, Determine
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