The Earth’s Magnetism and Magnetic Instruments
PHXII05:MAGNETISM and MATTER

360679 At the magnetic pole of earth, the value of angle of dip is

1 \(0^{\circ}\)
2 \(30^{\circ}\)
3 \(45^{\circ}\)
4 \(90^{\circ}\)
PHXII05:MAGNETISM and MATTER

360680 A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip is \(40^{\circ}\). Now dip circle is rotated so that the plane in which the needle moves makes an angle of \(30^{\circ}\) with the magnetic meridian. In the position the needle will dip by an angle

1 \(30^{\circ}\)
2 \(40^{\circ}\)
3 More than \(40^{\circ}\)
4 Less than \(40^{\circ}\)
PHXII05:MAGNETISM and MATTER

360681 Horizontal component of earth's fields is \(3 \times {10^{ - 5}}\;T\) and of dip is \(53^{\circ}\). The magnetic field of earth at that place, is

1 \(1 \times {10^{ - 5}}\;T\)
2 \(4 \times {10^{ - 5}}\;T\)
3 \(5 \times {10^{ - 5}}\;T\)
4 \(3 \times {10^{ - 5}}\;T\)
PHXII05:MAGNETISM and MATTER

360682 Assertion :
If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction.
Reason :
Dip neelde will stay vertical at the north pole of the earth.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
PHXII05:MAGNETISM and MATTER

360679 At the magnetic pole of earth, the value of angle of dip is

1 \(0^{\circ}\)
2 \(30^{\circ}\)
3 \(45^{\circ}\)
4 \(90^{\circ}\)
PHXII05:MAGNETISM and MATTER

360680 A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip is \(40^{\circ}\). Now dip circle is rotated so that the plane in which the needle moves makes an angle of \(30^{\circ}\) with the magnetic meridian. In the position the needle will dip by an angle

1 \(30^{\circ}\)
2 \(40^{\circ}\)
3 More than \(40^{\circ}\)
4 Less than \(40^{\circ}\)
PHXII05:MAGNETISM and MATTER

360681 Horizontal component of earth's fields is \(3 \times {10^{ - 5}}\;T\) and of dip is \(53^{\circ}\). The magnetic field of earth at that place, is

1 \(1 \times {10^{ - 5}}\;T\)
2 \(4 \times {10^{ - 5}}\;T\)
3 \(5 \times {10^{ - 5}}\;T\)
4 \(3 \times {10^{ - 5}}\;T\)
PHXII05:MAGNETISM and MATTER

360682 Assertion :
If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction.
Reason :
Dip neelde will stay vertical at the north pole of the earth.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
PHXII05:MAGNETISM and MATTER

360679 At the magnetic pole of earth, the value of angle of dip is

1 \(0^{\circ}\)
2 \(30^{\circ}\)
3 \(45^{\circ}\)
4 \(90^{\circ}\)
PHXII05:MAGNETISM and MATTER

360680 A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip is \(40^{\circ}\). Now dip circle is rotated so that the plane in which the needle moves makes an angle of \(30^{\circ}\) with the magnetic meridian. In the position the needle will dip by an angle

1 \(30^{\circ}\)
2 \(40^{\circ}\)
3 More than \(40^{\circ}\)
4 Less than \(40^{\circ}\)
PHXII05:MAGNETISM and MATTER

360681 Horizontal component of earth's fields is \(3 \times {10^{ - 5}}\;T\) and of dip is \(53^{\circ}\). The magnetic field of earth at that place, is

1 \(1 \times {10^{ - 5}}\;T\)
2 \(4 \times {10^{ - 5}}\;T\)
3 \(5 \times {10^{ - 5}}\;T\)
4 \(3 \times {10^{ - 5}}\;T\)
PHXII05:MAGNETISM and MATTER

360682 Assertion :
If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction.
Reason :
Dip neelde will stay vertical at the north pole of the earth.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
PHXII05:MAGNETISM and MATTER

360679 At the magnetic pole of earth, the value of angle of dip is

1 \(0^{\circ}\)
2 \(30^{\circ}\)
3 \(45^{\circ}\)
4 \(90^{\circ}\)
PHXII05:MAGNETISM and MATTER

360680 A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip is \(40^{\circ}\). Now dip circle is rotated so that the plane in which the needle moves makes an angle of \(30^{\circ}\) with the magnetic meridian. In the position the needle will dip by an angle

1 \(30^{\circ}\)
2 \(40^{\circ}\)
3 More than \(40^{\circ}\)
4 Less than \(40^{\circ}\)
PHXII05:MAGNETISM and MATTER

360681 Horizontal component of earth's fields is \(3 \times {10^{ - 5}}\;T\) and of dip is \(53^{\circ}\). The magnetic field of earth at that place, is

1 \(1 \times {10^{ - 5}}\;T\)
2 \(4 \times {10^{ - 5}}\;T\)
3 \(5 \times {10^{ - 5}}\;T\)
4 \(3 \times {10^{ - 5}}\;T\)
PHXII05:MAGNETISM and MATTER

360682 Assertion :
If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction.
Reason :
Dip neelde will stay vertical at the north pole of the earth.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect