Which of the following is true in the case of magnetic needle?

It is used to change the N-S pole of the Earth.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

It is meant for determining the direction w.r.t. to N-S of the Earth.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

It is meant to attract iron objects towards it.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

It is used as a watch to know the exact time at the given place.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B It is meant for determining the direction w.r.t. to N-S of the Earth.
A magnetic compass is an instrument that fundamentally allows for the determination of a reference point or region on Earth corresponding to magnetic north and south poles.

Suggest Corrections

Similar questions

Q. Fill in the blanks with the appropriate word.
(a) If a bar magnet is hung by a thread tied at its centre, its north pole becomes steady in the direction of the ................ Pole of the earth.
(South, north, east, west)
(b) If a bar magnet is cut into equal pieces by cutting it at right angles to its axis at two places, ........... bar magnets are formed, and a total of ................ poles are formed.
(6,3,2)
(c) There is repulsion between the .......... poles of a magnet, and attraction between its ............ poles.
(opposite, like.)
(d) When magnetic material is taken close to a magnet, the material acquires ............... .
(permanent magnetism, induced magnetism)
(e) If a magnet attracts a piece of metal, that piece must be made of ............. .
(any other metal but iron, magnetic material or iron, non-magnetic material)
(f) A magnet remains steady in a .............. direction.
(east-west, north-south)

Q. A short bar magnet of magnetic moment

5.25 \times 10^{- 2} J T^{- 1}

is placed with its axis perpendicular to the earths field direction. At what distance from the centre of the magnet, the resultant field is inclined at

45^{\circ}

with earths field on
(a) its normal bisector and (b) its axis. Magnitude of the earths field at the place is given to be

0.42 G

. Ignore the length of the magnet in comparison to the distances involved

State whether the following statements are ‘True’ or ‘False’.

(i) A cylindrical magnet has only one pole.

(ii) Artificial magnets were discovered in Greece.

(iii) Similar poles of a magnet repel each other.

(iv) Maximum iron filings stick in the middle of a bar magnet when it is bought near them.

(v) Bar magnets always point towards the North−South direction.

(vi) A compass can be used to find the East−West direction at any place.

(vii) Rubber is a magnetic material.

The location of Pole star has made it a convenient object for navigators to use to determine North-South direction.

Which of the following quantities:(I) magnetic declination (II) dip is used to determine the strength of earths magnetic field at a point on the earths surface

Join BYJU'S Learning Program

Which of the following is true in the case of magnetic needle?

The correct option is B It is meant for determining the direction w.r.t. to N-S of the Earth.A magnetic compass is an instrument that fundamentally allows for the determination of a reference point or region on Earth corresponding to magnetic north and south poles.

The correct option is B It is meant for determining the direction w.r.t. to N-S of the Earth.
A magnetic compass is an instrument that fundamentally allows for the determination of a reference point or region on Earth corresponding to magnetic north and south poles.