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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?
determine the magnitude of Poynting vector end the energy per unit time delivered to a wire of length land cross section A when electric current I flow in it
Regard as a volume of space in which the electric potential is 125,000 volts (at every point in the volume of space) and what is the electric field in that region of space? Ans
formula for height in a horizontal projection on an inclined plane?
Explain the term 'resolving power' of an astronomical telescope. How does it get affected on 1. Enhancing the aperture of the objective lens? 2. Enhancing the wavelength of t
Explain about the term step index fibre. Step index fibre: Into a step index fibre, the refractive index keeps constant throughout the core and decreases at the core-claddin
State 'Inverse square law of magnetism'. A. Coulomb's inverse law of magnetism states that, "The force of attraction or repulsion between two magnetic poles is directly pro
What is holographic microscopy
Q. Write the equation of a 25 cycle current sine wave having rms value of 30 A. Data: ν = 25 Hz, Irms = 30 A Solution: i = I o sin ωt =
Illustrate the characteristics of a sound note. What do you mean by Resonance? Illustrate with an example.
The Broken Pencil-Ray Optics A general classroom demonstration includes placing a pencil (or similar object) within an upright position within a round glass of water. The penci
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