Column I shows different positions in which one pole of a magnet is placed near that of the other.
Column II indicates the resulting action between them for each situation. Fill in the blanks.
Column I Column II
N - N _____
N - _ Attraction
S - N _
___ - S Repulsion

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Solution

Column I Column II
N - N Repulsion
N - S Attraction
S - N Attraction
S - S Repulsion

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Question 4

Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.

$\begin{matrix} C o l u m n I & C o l u m n I I N - N & \dots \dots N - \dots \dots & A t t r a c t i o n S - N & \dots \dots \dots \dots - S & R e p u l s i o n \end{matrix}$

Q. A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. The Effect observed in each case is stated in Column I. Possible reasons for the observed effects are mentioned in Column II. Match the statements given in Column I with those in Column II.

Column I	Column II
Boat gets attracted towards the magnet	Boat is fitted with a magnet with a north pole towards its head
Boat is not affected by the magnet	Boat is fitted with a magnet with a south pole towards its head
Boat moved towards the magnet when the north pole is brought near its head	Boat has a small magnet fixed along its length
Boat moves away from the magnet when the north pole is brought near its head	Boat is made up of magnetic material
Boat floats without changing its direction	Boat is made up of non-magnetic material

Q. Column I shows the cylindrical region of radius

r

where a downward magnetic field

\to B

exists, where

\to B

is increasing at the rate of

d B / d t

. A rod

P Q

is placed in different situation as shown. Match the column I with the current statement in column II regarding the induced emf in rod.

Q. A uniform disc rolls without slipping on a rough horizontal surface with uniform angular velocity. Point

O

is the centre of disc and

P

is point on disc as shown in figure. In each situation of column I a statement is given and the corresponding results are given in column II. Match the statements in column I with the results in column II.

A magnet was brought from different directions towards a toy boat that has been floating on water in a tub. The effect observed in each case is stated in Column I. Possible reasons for the observed effects are mentioned in Column II. Match the statements given in Column I with those in Column II.

S. No	Column I	Column II
1.	Boat gets attracted towards the magnet	Boat is fitted with a magnet with the north pole towards its head
2.	Boat is not affected by the magnet	Boat is fitted with a magnet with the south pole towards its head
3.	Boat moves towards the magnet when the north pole of the magnet is brought near its head	Boat has a small magnet fixed along its length
4.	Boat moves away from the magnet when the north pole is brought near its head	Boat is made of magnetic material
5.	Boat floats without changing its direction	Boat is made of a non-magnetic material

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Column I	Column II
N - N	_________
N - _______	Attraction
S - N	_________
_________ - S	Repulsion

Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.Column IColumn IIN - N_________N - _______AttractionS - N__________________ - SRepulsion

Column IColumn IIN - NRepulsionN - SAttractionS - NAttractionS - SRepulsion

Column I shows different positions in which one pole of a magnet is placed near that of the other.
Column II indicates the resulting action between them for each situation. Fill in the blanks.
Column I Column II
N - N _____
N - _ Attraction
S - N _
___ - S Repulsion

Column I Column II
N - N Repulsion
N - S Attraction
S - N Attraction
S - S Repulsion