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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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The energy stored in a 50 mH inductor carrying a current of 4 A is ______
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The energy stored in a 50 mH inductor carrying a current of 4 A is ______
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State the condition at which we say the two coils kept close to each other are perfectly coupled with each other.
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State the condition at which we say the two coils kept close to each other are perfectly coupled with each other.
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Using Ampere's law, obtain an expression for the magnetic induction near a current-carrying straight infinitely long wire.
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