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Define the characteristics of Heterojunction laser. Heterojunction laser: The threshold current density for homojunction lasers is extremely large because of poor optical an
Inductance is the circuit parameter to describe an inductor. It is an effect which results from the magnetic field that forms around a current carrying conductor. Inductance is sym
Q. Which of the following isn't true of Guglielmo Marconis experiments on wireless transmission Answer:- A) In 1901 he broadcasted a signal from Newfoundland to England
Q. Describes the construction of a 'Nicol Prism' and explains its action in converting UPL into PPL. Sol. Nicol Prism: This is the most simple and elegant polarizer and
in some case we take y=-g but in some case we take y=g... why???
What do you mean by Doppler effect? Derive a mathematical expression for the apparent frequency of a note, when source of sound and observer are approaching each other.
Q. A light of wavelength 58900A falls normally on a thin air film, 6 dark fringes are seen between two points. Calculate the thickness of the film. 2μt = nλ Thickness of th
Find the lowest frequency for which destructive interference Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. Speaker B is 2.00 m
An electric bulb is rated 220 V and 100 W.When it is operated on 110 V, the power consumed will be. Ans) P=V*I I will be same in both cases so P1=V1*I P2=V2*I Dividing both equati
Define Atmospheric Energy - thermodynamics? The mass of the Earth's atmosphere, p(z), varies with height z above the Earth's surface. Assume that the "thickness" of the atmosp
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