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qUESTIONS

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

A stream of electrons is projected horizontally to the right .A straight conductor carrying a current is supported parallel to the electron stream and above it. If the current in the conductor is from left to right, what will be the effect on the electron stream?

MCQs-PYQs-12th-jee

Three long straight wires A, B and C are carrying currents as shown in figure. Then the resultant force on B is directed :

MCQs-PYQs-12th-jee

A , B and C are parallel conductors of equal length carrying currents I , I and 2 I respectively. Distance between A 𝐴 and B 𝐵 is x . Distance between B and C is also x . F 1 is the force exerted by B on A and F2 is the force exerted by B on C choose the correct answer

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85

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