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Interference and Diffraction...

Interference and Diffraction

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Similar Questions

Explore conceptually related problems

Both in interference and diffraction phenomena, alternate dark and bright fringes are obtained on screen i) generally fringe width is same in interference and not same in diffraction ii) the central fringe in interference has maximum brightness and thei intensity gradually decreases on either side iii) in interference the intensity of all bright fringes in same iv) both the phenomena are produced from same coherent sources

Describe any two characteristic feature which distiguish interference and diffraction phenomena. Derive the expression for the intensity at a point of the interference pattern in Young's double slit experiment. (b) In the diffration due to single slit experiment, the aperture of the slit is 3 mm. If monochromatic light of wavelength 620 nm in incident normally on the slit, calculate the separation in between the first order minima and the 3^("rd") order maxima on one side of the screen. The distance between the slit and the screen is 1.5 m.

Knowledge Check

  • Assertion : Intensity pattern of interference and diffraction are not same. Reason : When there are few sources of light, then the result is usually called interference but if there is a large number fo them, the word diffraction is more often used.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • This section contains Assertion and Reason type questions each question has 4 choices (1)(2)(3) and (4) out of which only one is correct Assertion(A): In Young's double slit experiment often both the phenomenon interference and diffraction are present Reason:diffraction results due to superposition of wavelets from different points of the some wavefront

    A
    Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion
    B
    Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
    C
    Assertion is correct but Reason is incorrect
    D
    Assertion is incorrect but Reason is correct

  • Which of the following phenomena support the wave theory of light? 1. Scattering 2.Interference 3. Diffraction 4. Velocity of light in a denser medium is less than the velocity of light in the rare medium

    A
    1, 2 and 3
    B
    1, 2 and 4
    C
    2, 3 and 4
    D
    1, 3 and 4

    • Similar Questions

    Explore conceptually related problems

    (i) Write two points to distinguish between interference and diffraction fringes. (ii) In a Young 's double slit experiment , fringes are obtained on a screen placed at certain distance away from the slits . If the screen is moved by 5 cm towards the slits , the fringe width changes by 30 mu m . Given that the slits are 1 mm apart , calculate the wavelength of the light used.

    Which of the following relate to wave nature of light or particle nature or both ? (a) Interference (b) Diffraction (c) Photoelectric effect (d) Black body radiation (e) Planck's equation, E = hv (f) Einstein equation, E = mc^(2)

    Which of the following phenomenon proves the transverse nature of electromagnetic waves? (A) polarization (B) interference (C) diffraction (D) reflection

    Which of the following is not characteristic of waves : Reflection, refraction, interference, diffraction, polarisation, rectilinear propagation ?

    Interference is

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