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Recent questions tagged #mcq
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The variation of magnetic suceptibility `(chi)` with mognetising field for a paramognetic substance
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Mar 20, 2022
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12th Physics
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varun
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chapter4
#mcq
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The variation of magnetic suceptibility `(chi)` with absolute temperature T for a termomagnetic material
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Mar 20, 2022
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varun
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The variation of the intensity of magnetisation (I) with respect to the magnetising field (H) in a diamagnetic substance is described by the
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Mar 20, 2022
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12th Physics
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varun
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marks1
chapter4
#mcq
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The most appropriate magnetization `Mto` magnetising field H curve for a paramagnetic substance
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Mar 20, 2022
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varun
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chapter4
#mcq
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An iron rod of length L and magnetic moment M is bent in the form of a semi circle. Now its magnetic moment will
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Mar 20, 2022
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varun
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marks1
chapter4
#mcq
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Unit of magnetic Flux density is
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Mar 20, 2022
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12th Physics
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varun
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marks1
chapter4
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Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given
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Mar 20, 2022
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chapter4
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A magnet of magnetic moment M and pole strength m is divided in two equal parts, then magnetic moment of each part will
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Mar 20, 2022
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varun
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marks1
chapter4
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If a magnet of pole strength m is divided into four parts such that the length and width of each part is half that of initial one, then the pole strength of each part will
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Mar 20, 2022
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varun
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6.7k
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marks1
chapter4
#mcq
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The magnetism of magnet is due
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Mar 20, 2022
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chapter4
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The magnetic field at a point x on the axis of a small bar magnet is equal to the at a point y on the equator of the same magnet. The ratio of the distances of x and y from the centre of the magnet
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Mar 20, 2022
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The magnetic field due to a short magnet at a point on its axis at a distance x cm from the middle point of the magnet is 200 gauss. The magnetic field at a point on the neutral axis at a distance x cm from the middle of the magnet is .................
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Mar 20, 2022
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chapter4
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A bar magnet having a magnetic moment of `2xx10^4jt^(-1)` is free to rotate in a horizontal plane. A horizontal magnetic field `B=6xx10^(-4)` Tesla exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction `60^0` from the field
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Mar 20, 2022
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marks1
chapter4
#mcq
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A magnet of length 0.1 m and pole strength `10^(-4)` A.m. is kept in a magnetic field of 30 tesla at an angle of `30^0` . The couple acting on it is ...................` xx10^(-4)`
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Mar 20, 2022
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varun
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marks1
chapter4
#mcq
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In the case of bar magnet, lines of magnetic
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Mar 20, 2022
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marks1
chapter4
#mcq
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A small bar magnet of moment M is placed in a uniform field of H. If magnet makes an angle of `30^0` with field, the torque acting on the magnet
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Mar 20, 2022
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12th Physics
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varun
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marks1
chapter4
#mcq
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The effective length of a magnet is 31.4 cm and its pole strength is 0.5 A.m. The magnetic moment, if it is bent in the form of a semicircle will be ......................Amp.`m^2`
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Mar 20, 2022
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varun
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marks1
chapter4
#mcq
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A bar magnet of length 10 cm and having the pole strength equal `00.1xx10^(-3)` to is kept in a magnetic field having magnetic induction (B) equal to `4pixx10^(-3)` tesla. It makes an angle of `30^0` with the direction of magnefic induction. The value of the torque acting on the magnet is ......................
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Mar 20, 2022
in
12th Physics
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varun
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6.7k
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marks1
chapter4
#mcq
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A small bar magnet has a magnetic moment 1.2 A.`m^2` . The magnetic field at a distance 0.1 m on its axis will be .........................
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Mar 20, 2022
in
12th Physics
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varun
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6.7k
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marks1
chapter4
#mcq
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If a plastic rod rubbed with fur is made to touch two small pith balls suspended nearby, then which figure shows their final
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Mar 20, 2022
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varun
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6.7k
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marks1
chapter1
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