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How would the angular separation of interference fringes in Young's double slit experiment change when the distance between the slits and screen is

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How does the angular separation between fringes in single slit diffraction experiment change when the distance of separation between the slit and screen is

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If the angle between the axis of polariser and the analyser is 45°; write the ratio of the intensities of original light and the transmitted light after passing through the

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Is Huygen’s principle valid for longitudunal sound

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Why is the diffraction of sound waves more evident in daily experience than that of light

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For the same objective, find the ratio of the least separation between two points to be distinguished by a microscope for light of 5000 A o and electrons accelerated through 100V used as the illuminating

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Consider a two slit interference arrangements (Fig. ) such that the distance of the screen from the slits is half the distance between the slits. Obtain the value of D in terms of λ such that the first minima on the screen falls at a distance D from the centre

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An X-ray tube produces a continuous spectrum of radiation with its short wavelength end at 0.45 Å. What is the maximum energy of a photon in the

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The wavelength of a photon needed to remove a proton from a nucleus which is bound to the nucleus with 1 MeV energy is

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There are materials which absorb photons of shorter wavelength and emit photons of longer wavelength. Can there be stable substances which absorb photons of larger wavelength and emit light of shorter

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Consider a metal exposed to light of wavelength 600 nm. The maximum energy of the electron doubles when light of wavelength 400 snm is used. Find the work function in

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Assuming an electron is confined to a 1nm wide region , find the uncertainty in momentum using Heisenberg Uncertainty principle (Ref Eq 11.12 of NCERT Textbook). You can assume the uncertainty in position Δx as 1nm. Assuming `p approx Delta p` , find the energy of the electron in electron

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A student performs an experiment on photoelectric effect, using two materials A and B. A plot of Vstop vs ν is given in Fig. Which material A or B has a higher work

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Consider a 20 W bulb emitting light of wavelength 5000 A ° and shining on a metal surface kept at a distance 2m. Assume that the metal surface has work function of 2 eV and that each atom on the metal surface can be treated as a circular disk of radius 1.5 A ° .

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Calculate the electric field at origin due to infinite number of charges as shown in figures

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A point charge of `0.009 muC` is placed at origin. Calculate intensity of electric field due to this point charge at point `(sqrt2,

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Figure shows three large metallic plates with charges `– Q, 3Q and Q` respectively. Determine the final charges on all the

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The energy density u is plotted against the distance r from the centre of a spherical charge distribution on a log-log scale. Find the magnitude of slope of obtianed straight

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The figure shows four situations in which charges as indicated `(q > 0)` are fixed on an axis. How many situations is there a point to the left of the charges where an electron would be in

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A Semicircular rod is charged uniformly with a total charge Q coulomb. The electric field intensity at the centre of curvature is

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