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Huygens' construction; Huygens' principle (C. Huygens):
The mechanical propagation of any wave (exclusively, of light) is equal to supposing that each point on the wavefront behaves as point source of wave emission.
Calculating unknown resistances The current through the galvanometer (G) - a very sensitive ammeter, is reduced to zero by adjusting R 4 . The bridge is then said to be balanc
Photoelectric electricity is produced directly from solar energy when which following are absorbed in a semiconductor to create an electric current? a) Protons b) Electron
Neutron is a fundamental particle which is necessary constituent of all nuclei except that of hydrogen molecule. It was discovered by Chadwick. (1) The charge of neutron: It is
Derive a mathematical expression for the energy stored in a capacitor. What is the energy stored when the space between the plates is filled with a dielectric a) With chargi
a) Here temperature difference of junction is used to produce thermo e.m.f. and vice-versa. b) This effect produced when junctions of a thermocouple are kept at dissimilar tempe
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COHERENCE : 1) Visible light energy is emitted when the excited electrons in atoms undergo transitions to the ground state. 2) In ordinary light sources, these transitions
what is the motion of an oscillating column in a u-tube?
Q. How several pounds does one gallon of water weigh? Answer:- One wine measure or else US gallon of water weighs 8.34 pounds. An imposing Gallon is ten pounds of water at
Digital multimeters: Digital multimeters offer a number of significant advantages when compared with their more humble analogue counterparts. The display fitted to a digital m
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