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qUESTIONS

MCQs-PYQs-12th-jee

Two electric dipoles of moment p and 64 p are placed in opposite direction on a line at a distance of 25 cm. The electric field will be zero at point between the dipoles whose distance from the dipole of moment p is

MCQs-PYQs-12th-jee

The distance between H+ and Cl ions in HCl- molecule is 1.28 Å. What will be the potential due to this dipole at a distance of 12 Å on the axis of dipole

MCQs-PYQs-12th-jee

An electric dipole coincides on the z-axis and its centre coincides with the origin of the cartesian coordinate system. The electric field at an axial point at a distance z from the origin isEᶻ and the electric field at an equatorial point at a distance y from the origin is Eʸ. Given thaty=z))a, the value of | Eᶻ/Eʸ | is

MCQs-PYQs-12th-jee

The electric field due to an electric dipole at a distance r from its centre in axial position is E. If the dipole is rotated through an angle of 90° about its perpendicular axis, the electric field at the same point will be

MCQs-PYQs-12th-jee

The ratio of electric field and potential (E/V) at midpoint of electric dipole, for which separation is I

MCQs-PYQs-12th-jee

A given charge is situated at a certain distance from an electric dipole in the end-on position experiences a force F. If the distance of the charge is doubled, the force acting on the charge will be

MCQs-PYQs-12th-jee

In Millikan’s oil drop experiment an oil drop carrying a charge Q is held stationary by a potential difference 2400V between the plates. To keep a drop of half the radius stationary the potential difference had to be made 600V. What is the charge on the second drop

MCQs-PYQs-12th-jee

Two equal negative charges -q is fixed at points (0, a) and (0, -a) on the Y-axis. A positive charge ‘q’ is released from rest at the point (x greater than a) on the x-axis. What is the frequency of motion

MCQs-PYQs-12th-jee

Two-point charges (+Q) and (-2Q) are fixed on the X-axis at positions a and 2a from origin respectively. At what positions on the axis, the resultant electric field is zero

MCQs-PYQs-12th-jee

An infinite number of electric charges each equal to 5 nano- coulomb (magnitude) are placed along X-axis at x = 1cm, x = 2 cm, x = 4 cm x = 8 cm and so on. In the setup if the consecutive charges have opposite sign, then the electric field in Newton/Coulomb at x = 0 is

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