Please select a subject first
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When light travels from an optically rarer medium to an optically denser medium, the speed decreases because of change in ______
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Light follows wave nature because ______
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Young’s double-slit experiment is carried out using green, red and blue light, one colour at a time. The fringe widths recorded are WG, WR, and WB respectively then ______
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The path difference between two waves meeting at a point is (11/4)λ. The phase difference between the two waves is ______
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Which of the following cannot produce two coherent sources?
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What is the relation between phase difference and Optical path in terms of speed of light in a vacuum?
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A Plane Wavefront of light of wavelength 5500 A.U. is incident on two slits in a screen perpendicular to the direction of light rays. If the total separation of 10 bright fringes on a screen 2 m away is 2 cm. Find the distance between the slits.
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State any four conditions for obtaining well–defined and Steady interference patterns.
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The work done in carrying a charge Q once round a circle of radius r with charge q at the centre of the circle is ______
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The mean free path of electrons in a metal is 4 x 10-8m. Find the electric field, in units of V/m, which can give on an average 2 eV energy to an electron in the metal.
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Obtain an expression for the electric field intensity at a point outside uniformly charged infinite plane sheet.
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Obtain an expression for the capacitance of a parallel plate capacitor without a dielectric.
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When unknown resistance is determined by meter bridge, the error due to contact resistance is minimised by ______
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Define: electrical circuit
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A strong magnetic field is applied to a stationary electron. Then the electron ______
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Which of the following is not a unit of magnetic induction?
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What happens to the magnetic field at the centre of a circular current-carrying coil if we double the radius of the coil keeping the current unchanged?
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Explain the construction and working of the Moving coil Galvanometer.
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Show that the orbital magnetic dipole moment of a revolving electron is `("evr")/2`
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