WebMay 26, 2024 · The reason is as follows : In conventional light source, light comes from a large number of independent atoms, each atom emitting light for about 10–9 seconds i.e., light emitted by an atom is essentially a pulse lasting for only 10–9 seconds. Even if all the atoms were emitting light pulses under similar conditions, waves from different ... WebQ3. Huygens’s concept of secondary wave A.allow us to find the focal length of the thick lens B.it is a geometrical method to find the wavelength C.used to determine a velocity of light D.it is used to explain polarisation Ans: B. Huygens’s concept of secondary wave is a geometrical method to find the wavelength.
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WebSep 20, 2024 · Wave Optics Notes Class 12 Physics Notes admin September 20, 2024 2 min read Syllabus: Wave optics: Wave front and Huygen’s principle, reflection and refraction of plane wave at a plane surface using wave fronts. Proof of laws of reflection and refraction using Huygen’s principle. WebLikewise, for the dark fringes, ym= λL d (m+1 2),m= 0,±1,±2,.. (dark) The separation of the fringes if given by Δy=ym+1−ym= λL d Note from this equation how λ needs to be of the same order of d as requested by the condition 2) where now d represents the size of the object (D = d). If d >> λ then Δy goes to zero and the interference patter disappears. ... capital of norway is
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