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The dip at a place is delta. For measuri...

The dip at a place is delta. For measuring it, the axis of the dip needle is perpendicular to the magnetic meridian. If the axis of the dip needle makes angle `theta` with the magnetic meridian, the apparent dip will be given `tan delta_(1)` which is equal to:

A

`tan delta cos theta`

B

`tan delta sec theta`

C

`tan delta sin theta`

D

`tan delta cosec theta`

Text Solution

Verified by Experts

The correct Answer is:
B
`tan delta=B_(V)/B_(H) and tan delta_(1)=B_(V)/(B_(V) costheta)`
or `tan delta _(1)=(tan delta)/(cos theta)=tan delta sec theta`
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Knowledge Check

  • A dip needle in a plane perpendicular to magnetic meridian will remain

    A
    Vertical
    B
    Horizontal
    C
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    D
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  • In a plane perpendicular to the magnetic meridian, the dip needle will be:

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    inclined equal to the angle of dip at that place
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    pointing in any direction

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    Horizontally
    B
    Vertically
    C
    in the direction of earth's magnetic field
    D
    Perpendicular to earth's magnetic field

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