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The vertical component of the earth's ma...

The vertical component of the earth's magnetic field is zero at a place where the angle of dip is

A

`0^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
The vertical component of earth's magnetic field is zero at equator where angle of dip is also zero.
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The earth's magnetic field is approximately like that of a giant magnetic dipole, whose axis is inclined roughly 20^@ west of the axis of rotation of earth which is the geographic N-S direction. The strength of earth's magnetic field is of the order of 10^-4 tesla . Three magnetic elements of earth are: Magnetic declination (theta) , magnetic inclination or magnetic dip (delta) and horizontal component (H) of earth's magnetic field. Magnetic declination is the small angle between magnetic axis and geographic axis at a place. Magnetic dip at a place is the angle, which the direction of total strength of earth's magnetic field (R) makes with a horizontal line in magnetic meridian. If H is horizontal component and V is vertical component of earth's magnetic field, then H=Rcos delta , V=Rsin delta and R=sqrt(H^2+V^2) . At a place on the surface of earth. H is of the order of 3*3xx10^-5tesla . The vertical component of earth's magnetic field is zero at a place where angle of dip is

Where is the vertical component of earth's magnetic field zero?

If the horizontal component of earth's magnetic field at a place where the angle of dip is 60^@ is 0*4xx10^-4T , calculate the vertical component and the resultant magnetic field at that place.

Find the value of the vertical components of earth's magnetic at a place , where the angle of dip is 60^(@) and B_(H) = 0.2 xx 10^(-4) T .

If horizontal and vertical components of the earths magnetic field are equal at a certain place, then the angle of dip at that place will be

A2Z-MAGNETISM AND MATTER-Section D - Chapter End Test
  1. The vertical component of the earth's magnetic field is zero at a plac...

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  2. The true value of angle of dip at a place is 60^(@), the apparent dip ...

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  3. A magnetic needle lying parallel to a magnetic field requires W units ...

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  4. A thin rectangular magnet suspended freely has a period of oscillation...

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  5. The length of a magnet is large compared to its width and breadth. The...

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  6. Two identical short bar magnets, each having magnetic moment M, are pl...

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  7. The magnet field lines due to a bar magnet are correctly shown in

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  8. A curve between magnetic moment and temperature of magnet is

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  9. Which curve may best repreasent the current deflection in a tangent ga...

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  10. The variation of the intensity of magnetisation (I) with respect to th...

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  11. For ferromagnetic material, the relative permeability (mu(r)), versus ...

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  12. A magnet is suspended horizontal in the earth's magnetic field. When i...

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  13. The field due to a magnet at a distance R~ from the centre of the magn...

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  14. A long magnet is cut in two parts in such a way that the ratio of thei...

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  15. If the magnetic flux is expressed in weber, then magnetiv induction ca...

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  16. Magnetic intensity for an axial point due to a short bar magnet of mag...

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  17. A small rod of bismuth is suspended freely between the poles of a stro...

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  18. Magnetic moment of two bar magnets may be compared with the help of

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  19. At place, the magnitudes of the horizontal component and total intensi...

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  20. The angle of dip at a certain place is 30^(@). If the horizontal compo...

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  21. The horizontal component of the earth's magnetic field is 0.22 Gauss a...

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