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qUESTIONS

If a high power heater is connected to electric mains, then the bulbs in the house become dim, because there is a

MCQs-PYQs-12th-jee

A particle with charge Q, moving with a momentum p, enters a uniform magnetic field normally. The magnetic field has magnitude B and is confined to a region of width d, where d less than p/BQ.The particle is deflected by an angle θ in crossing the field.

MCQs-PYQs-12th-jee

A proton accelerated by a potential difference V = 500 kV flies through a uniform transverse magnetic field with induction B = 0.51 T. The field occupies a region of space d =10 cm in thickness. Find the angle a through which the proton deviates from the initial direction of its motion.

MCQs-PYQs-12th-jee

A long wire A carries a current of 10 amp. Another long wire B, which is parallel to A and separated by 0.1 m from A, carries a current of 5 amp. in the opposite direction to that in A. What is the magnitude and nature of the force experienced per unit length of B

MCQs-PYQs-12th-jee

Diamagnetic substances are

MCQs-PYQs-12th-jee

If a diamagnetic solution is poured into a U-tube and one arm of this U-tube placed between the poles of a strong magnet with the meniscus in a line with the field, then the level of the solution will

MCQs-PYQs-12th-jee

If a magnetic substance is kept in a magnetic field, then which of the following is thrown out

MCQs-PYQs-12th-jee

The universal property of all substances is

MCQs-PYQs-12th-jee

A small rod of bismuth is suspended freely between the poles of a strong electromagnet. It is found to arrange itself at right angles to the magnetic field. This observation establishes that bismuth is

MCQs-PYQs-12th-jee

Among the following properties describing diamagnetism identify the property that is wrongly stated

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