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Role of Magnetic field in generating ultrasonic waves
Magnetic field is applied parallel to the length of a ferromagnetic rod made of material as like iron or nickel, a small elongation or contraction arises in its length. It is termed as magnetostriction. The change into length depends onto the intensity of the applied magnetic field and nature of the ferromagnetic material. The change within length is independent of the direction of the field.
a. Describe the radiation resistance of an antenna. b. With sketch, explain the feed mechanism of a parabolic reflector c. Explain the given term:- (i) Horn Antenna (ii
derive an expression for density of states and hence deduce an expression for carrier concentration of metals
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What is magnetic moment of a bar magnet 1. When a bar magnet of pole strength (m) and length (2l) is suspended freely in air,it always turns along the magnetic north (N) and S
what is anti reflection coating ?
A ROCKETSHIP IN FREE SPACE MOVES WITH CONSTANT ACCELERATION OF 9.8 METER PER SECOND SQUARE. IF IT STARTS FROM REST HOW LONG IT WILL TAKE TO ACQUIRE A SPEED ONE-TENTH THAT OF LIGHT
Under particular condition, light can also suffer inelastic scattering from molecules in which it's wavelength changes.
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