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Meissner effect (W. Meissner; 1933):
The reduction of the magnetic flux in a superconducting metal while it is cooled below the transition temperature. i.e., superconducting materials reflect magnetic fields.
Q. What are antireflection films and interference filters? Ans. Anti reflecting Films: When a beam of light travels normally from a medium of refractive index µ2 to a me
The frequency of a wave is 50 Hertz and its wavelength is 25 meters. What is the velocity of this wave? Ans: The velocity of given wave is 1250 meters/second.
Why does sun appear flat during sunrise and sunset? The sun rays have to travel by a larger atmospheric distance. Most of the blue light and shorter wave lengths are removed by
Q. Explain with the help of diagram and experiment arrangement to produce Newton's rings.
Which of the subsequent represent the two kinds of basic (single-concept) electric potential problems?
A thin convex lens of focal length 0.1m and a thin concave lens of focal length 0.1m are placed co-axially in contact. What is the total power of the combination?
if in an interference pattern,the ratio between maximum and minimum intensities is 36:1,find the ratio between the amplitude and intensities of the two interfering waves.
Correspondence limit (N. Bohr) The restriction at which a more general theory decrease to a more specialized theory while the conditions that the specialized theory needs are t
Newton's laws of motion (Sir I. Newton) Newton's first law of motion A body remain continues in its state of constant velocity (that may be zero) unless it is acted on
Describe the construction of optical fiber. Explain the principle of propagation of light waves within a fiber. Define acceptance angle and acceptance. How optical fibers can be u
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