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Can you explain Doppler effect? Find a mathematical expression for the apparent frequency heard when the source is in motion and the listener is at rest and also give limitation of Doppler effect?
Why diffraction can't occur if slit width is less than the wavelength of the light? Can you explain?
A 20 Ω non-reactive resistor is connected in series with a coil of inductance 80mH and negligible resistance. The combined circuit is connected to a 200V, 50Hz supply. Calcula
Q. What is the density of energy states in metals? Obtain an expression for the density of states for free electron gas in metals. Ans. Density of energy state is define
formula for maximum height.
are thermo-electric thermometres fairly sensitive ?
Melting point: 525 0 C. It has small band gap and very high mobility around 70,000Cm 2 /V-Sec. It has much easier to prepare in single crystal from the Gallium arsenide. It is
A disc of mass m and radius R is attached to a rectangular plate of the similar mass breadth R and length 2R . Find moment of inertia of this system about diameter of disc. They ar
successive disintegration derive equation for nb
Does a soccer ball go faster in the air on a cold or hot day? On a hot day, the air molecules have much kinetic energy - they move more freely. They will move out of the way of
If the angle of incidence is 60 degrees,then what is the angle of deviation?
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