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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
A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma
How is laser in treatment use as cooling? Lasers cooling treatment: A technique which has had recent success is laser cooling. It involves atom trapping, a process where a n
what is physics and how to learn it easlly?
Self Gravitational Potential Energy of matter forming a thin uniform shell of mass M and radius R is-
Imagine an elctromagnetic wave propagating vacuum with electric field Ex=10 2 sinπ(3x10 6 z - 9x10 14 t) V/m, E y =0, E z = 0. Calculate the speed, frequency, wavelength, initial
With the help of a ray diagram, explain the formation of the final image of an object in a compound microscope. Derive a mathematical expression for its magnifying power.
One scientist wants to put an 100kg experimental package in orbit around the Earth. The cost of deployment depends on the amount of more extra energy it takes to get it into the r
With the aid of a diagram, explain why the use of long narrow crystals is not optimal for spatial resolution as you move away from the centre of the field-of-view. Is the degradati
As we know photon's spin is one, how lots CPH (that have spin) is able keep the spin of photon? Answer; the photon spin like electron spin comes up of its properties and indepe
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