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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?
Lens: A transport refractive body bonded by one or two spherical surface known as lens. There are various kinds of lenses. e.g. Double convex Lens Double concave lens
An object starts from point A and moves with constant acceleration in a straight line. 5 seconds after the start, it crosses point B, and 7 seconds after the start it crosses poin
Q. What are the characteristics of laser beam? Characteristics of laser The laser beam (a) is monochromatic. (b) is coherent with the waves all exactly in phase with o
Determine the change in Entropy accompanying the isothermal expansion of 5 moles of an ideal gas to 6 times to its initial volume at 330 k. Differentiate between Helmholtz's and
as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?
Demonstrating how the angle of the sun's rays changes from day to day at the same hour Cut a 1-cm round hole in a piece of paper or cardboard. Place this in a south window of y
The screw is an inclined plane Mark off and cut out a right angle triangle on a piece of white paper or a piece of wrapping paper. The triangle should be about 30 cm long on it
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 =
Q. How several pounds does one gallon of water weigh? Answer:- One wine measure or else US gallon of water weighs 8.34 pounds. An imposing Gallon is ten pounds of water at
It is an instrument which can detect/calculate very small electric currents. It is also called as moving magnet galvanometer. It has of three circular coils of insulated copper wir
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