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Isogonic lines are those, for which...

Isogonic lines are those, for which

A

declination is same at all the places on the line

B

angle of dip is same at all the places on the line

C

the value of the horizontal component of earth's magnetic field is the same

D

all of the above

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
  1. The effect due to uniform magnetic field on a freely suspended magneti...

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  2. Angle between magnetic meridian and geographical meridian is called

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  3. Isogonic lines are those, for which

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  4. At which place on the earth, the earth's magnetic field becoes horizon...

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  5. A dip circle is at right angle to the magnetic meridian. What will be ...

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  6. The sensitivity of a moving coil galvanometer increases with decrease ...

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  7. The diamagnetic material are

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  8. The substance, in which the magnetic moment of single atom is not zero...

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  9. The relative permeability of a diamagnetic material is

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  10. In which type of material the magnetic susceptibility does not depend ...

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  11. Above curie temperature

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  12. Steel si preferred for making permanent magnets, whereas soft iron is ...

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  13. A permanent magnet magnet has the properties of retentivity and coerci...

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  14. An electromagnet uses

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  15. Core of transformer is made up of

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  16. A current I flows along the length of an infinitely logn, straight and...

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  17. A power line lies along east-west direction and carries a current of 1...

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  18. A moving coil galvanometer has a resistance of 900 ohm. In order to se...

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  19. A moving coil galvanometer of resistance 100Omega is used as an ammete...

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  20. The magnetic field lines

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