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A compass needle just above a wire in which electrons are moving towards east, will point: A) east B) west C) north D) south

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Explain parallax method for measuring distance of a nearly star.

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A parallel plate capacitor is charged and then isolated. The effect of increasing the plate separation on charge, potential and capacitance respectively are:

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If momentum of an object is increased by 10% then its kinetic energy will increase by?

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The minimum distance between an object and its real image formed by a convex lens is:

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A Zener diode works on: A) zero bias B) reverse bias C) forward bias D) infinite bias

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A particle of mass M at rest decays into two masses m1 and m2with non-zero velocities. What is the ratio λ1/λ2 of de Broglie wavelengths of particles?

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A plane electromagnetic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point in space and time, E=6.3 j^V/m. What is Bat this point?

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A conducting rod of length l is hinged at point O. It is free to rotate in a vertical plane. There exists a uniform magnetic field B in horizontal direction. The rod is released from the position. What is the potential difference between the two ends of the rod is proportional to?

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The magnetic induction at a point P which is 4cm distant from a long current carrying wire is 10 −3T. The field of induction at a distance 12 cm from the same current would be?

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