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An echo is easily the retransmission of speaker's own voice caused by reflection at a distance surface.
If there is a sound reflector at a distance d from host, then the time interval among original source and it's echo at the site of source will be
What is inertia?
principle physics
Explain about the number of modes in the optical fibres. Mode in the optical fibres: A mode is a path occupied by a ray of light through an optical fibre. This is a mathemat
why does rain water boils faster than fresh water
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Q. Why do you not collapse in the pressure created by the atmosphere? Answer:- If the outward pressure inside your body weren't equal to the pressure pressing in on you an
A ray of light itinerant in air passes through a flat plate of glass. Refraction takes place. Where the refraction does occurs? Ans: Refraction takes places when light tra
Explain about the double-crucible method. Low loss fibers are mostly manufactured by using double crucible and vapour phase deposition method. The double-crucible method is
Write about the main features in which Fresnel and Fraunhoffer approaches of diffraction differ? Mention some (at least four) applications of diffraction.
Balmer series (J. Balmer; 1885) An equation that describes the emission spectrum of hydrogen while an electron is jumping to the second orbital; four of the lines are into the
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