Question 2 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e4f59b460d7261e64b.jpg' />
A person takes a plastic or wooden scale and puts a mark on one of its ends for identification. Now, he ties a thread at the middle so that he can suspend it from a wooden stand as shown in the figure. He makes sure that the scale can rotate freely. Now, he lets it come to rest. He marks two points on the ground to show the position of the ends of the scale when it comes to rest. Next, he rotates the scale by gently pushing one end in any direction and lets it come to rest. Again, he marks the position of the two ends in its position of rest. Do you find that the scale always comes to rest in the same direction?
Question 3 :
State true or false:
A compass can be used to find East-West direction at any place.
Question 4 :
Paheli has this puzzle for you. You are given two identical bars which look as if they might be made of iron. One of them is a magnet, while the other is a simple iron bar. How will you find out, which one is a magnet?
Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c672f59b460d7261e5fc.jpg' />
A bar magnet is cut into two pieces A and B, from the middle, as shown in figure above Will the two pieces act as individual magnets?
Question 6 :
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat is not affected by the magnet. Which of the following is a reason for this?
Question 8 :
Paheli and Boojho went to a place where a lot of waste material was piled into huge heaps. Something exciting was happening! A crane was moving towards the heap of junk. The long hand of the crane lowered a block over a heap. It then began to move. What will happen next?
Question 9 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e9f59b460d7261e653.jpg' />
A person takes two small toy cars and labels them A and B. He places a bar magnet on top of each car along its length and fix them with rubber bands as shown in the figure. In car A, keep the south pole of the magnet towards its front. Place the magnet in opposite direction in car B. Now, he places the toy cars close to each other such that the rear side of car A faces the front side of car B as shown in the figure. Do they move as before?
Question 10 :
You are given an iron strip. How will you make it into a magnet?
Question 12 :
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat floats without changing its direction. Which of the following is a reason for this?
Question 13 :
State true or false:
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Question 15 :
Similar poles of a magnet repel each other. State true or false.
Question 16 :
In olden days, sailors used to find direction by suspending a piece of _______.
Question 17 :
The given shows different positions in which one pole of a magnet is placed near that of the other. The answer indicates the resulting action between the two poles.
[ N - ? ] = Attraction
Question 19 :
In olden days, sailors used to find direction by suspending a piece of ___________.
Question 20 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c673f59b460d7261e5fe.JPG ' />
Observe the pictures A and B given in above figure carefully . Which of the following statement is correct for the above given pictures ?
Question 21 :
State true or false:
A cylindrical magnet has only one pole.
Question 22 :
Fill in the blank:
In a bar magnet, magnetic attraction is ............... near its ends.
Question 23 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c675f59b460d7261e600.jpg' />
Three magnets A, B and C were dipped one by one in a heap of iron filing. Figure above shows the amount of the iron filing sticking to them. The strength of these magnets will be
Question 24 :
Choose the correct option(s) for : Magnet can be repelled by
Question 25 :
A compass can be used to find East-West direction at any place. State true or false.
Question 27 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e7f59b460d7261e650.jpg' />
A person takes two small toy cars and labels them A and B. He places a bar magnet on top of each car along its length and fix them with rubber bands as shown in the figure. In car A, keep the south pole of the magnet towards its front. Place the magnet in opposite direction in car B. Now, he places the two cars close to one another as shown in the figure. Do the cars run away from each other?
Question 28 :
Have you seen stickers that remain attached to iron surfaces like almirahs or the doors of refrigerators?
Question 29 :
A cylindrical magnet has only one pole. State true or false.
Question 30 :
The materials which are attracted towards a magnet are called _______.
Question 31 :
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat gets attracted towards pole magnet. Which of the following is a reason for this?
Question 33 :
Fill in the blank:
When a bar magnet is broken; each of the broken part will have ................ pole/poles.
Question 35 :
Spread some iron filings on a sheet of paper. Now, place a bar magnet on this sheet. Do the iron filings stick all over the magnet?
Question 37 :
The given shows different positions in which one pole of a magnet is placed near that of the other. The answer indicates the resulting action between them for each situation. [ S - N ] = ?
Question 38 :
A tailor was stitching buttons on his shirt. The needle has slipped from his hand on to the floor. Can you help the tailor to find the needle?
Question 39 :
The different positions of magnet are shown in which one pole of a magnet is placed near that of the other. The answer indicates the resulting action between them for each situation. [ N - N ] = ?
Question 40 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e7f59b460d7261e64f.jpg' />
A person takes two small toy cars and labels them A and B. He places a bar magnet on top of each car along its length and fix them with rubber bands as shown in the figure. In car A, keep the south pole of the magnet towards its front. Place the magnet in opposite direction in car B. Now, he places the two cars close to one another as shown in the figure. Do the cars remain at their places?
Question 41 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e5f59b460d7261e64c.jpg' />
A person takes a bar magnet and puts a mark on one of its ends for identification. Now, he ties a thread at the middle of the magnet so that he can suspend it from a wooden stand as shown in the figure. He makes sure that the magnet can rotate freely. Now, he lets it come to rest. He marks two points on the ground to show the position of the ends of the magnet when it comes to rest. Next, he rotates the magnet by gently pushing one end in any direction and lets it come to rest. Again, he marks the position of the two ends in its position of rest. Does the magnet now point in a different direction?
Question 42 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e3f59b460d7261e64a.jpg' />
Spread some iron filings on a sheet of paper. Now, place a bar magnet on this sheet. Do you observe that more iron filings get attracted to some parts of the magnet than others as shown in the figure?
Question 43 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c677f59b460d7261e603.jpg' />
Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown in above figure . Which regions of the magnet have more iron filings sticking to it ?
Question 44 :
What about opposite poles — do they attract or repel each other?
Question 45 :
What will happen if a magnet is brought near a compass?
Question 46 :
S - N shows positions in which one pole of a magnet is placed near that of the other. Which of the following action indicates this?
Question 48 :
Artificial magnets are made in different shapes such as _______, _______ and _______.
Question 49 :
Maximum iron filings stick in the middle of a bar magnet when it is brought near them. State true or false.
Question 50 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e1f59b460d7261e647.jpg' />
What materials did you find to be non-magnetic from the above Table?