The dip at a place is - For measuring it- the axis-of the dip needle is perpendicular to the magnetic-meridian- If the axis of the dip needle makes-angle - with the magnetic meridian- the apparent-dip willbegivenbytan - whichis equal to-1- tan - cos - -2- tan - sec -3- tan - sin - -4- tan - cosec -

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Standard XII

Physics

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The dip at a ...

Question

The dip at a place is δ. For measuring it, the axis of the dip needle is perpendicular to the magnetic meridian. If the axis of the dip needle makes angle θ with the magnetic meridian, the apparent dip willbegivenbytan δ whichis equal to:- (1) tan δ cos θ (2) tan δ sec θ (3) tan δ sin θ (4) tan δ cosec θ

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Q. Dip circle is not set into magnetic meridian and the angle at which it is inclined to the magnetic meridian is unknown.

δ^{'}

and

δ^{''}

are apparent dips at a place in which dip circle is kept in transverse positions. The dip is:

The angle of dip at a place is $δ$ . If the dip is measured in a plane making an angle $θ$ with the magnetic meridian, the apparent angle of dip $δ_{1}$ will be :

Q. A dip needle lies initially in the magnetic meridian when it shows an angle of dip

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at a place. The dip circle is rotated through an angle

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. Then

\frac{tan θ^{'}}{tan θ}

Q. A dip needle lies initially in the magnetic meridian when it shows an angle of dip

θ

at a place. The dip circle is rotated through an angle

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in the horizontal plane and then it shows an angle of dip

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Then

\frac{tan θ'}{tan θ}

The plane of the dip circle is set in the geometric meridian and the apparent dip is $θ_{1}$ . It is then set in a vertical plane perpendicular to geographic meridian. The apparent dip is $θ_{2}$ . The declination $δ$ at the place is :

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