ICSE Worksheet for chapter-18 Magnetism class 9

ICSE Worksheet for chapter-18 Magnetism class 9

Worksheet For class 9

Find ICSE Worksheet for chapter-18 Magnetism class 9

CLASS-9

BOARD: ICSE

Physics Worksheet - 18

TOPIC: Magnetism

For other ICSE Worksheet for class 9 Science check out main page of Physics Wallah.

SUMMARY

• Introduction, Natural and Artificial magnets, Properties of bar magnets
• Induced magnetism, Lines of magnetic field and its properties
• Magnetic field of earth
• Plotting non uniform magnetic field of a strong bar magnet and neutral points

SECTION 1 – OBJECTIVE

1. Which of the following Statements is true?
   1. Artificial magnets are economical than natural magnets
   2. A magnet can be broken into N and S poles
   3. The distance between north & south poles of a magnet is its effective length
   4. Poles of a magnet lie exactly at its ends.
2. Which of the following is not magnetic material?
   1. Steel
   2. Cobalt
   3. Iron
   4. Manganese
3. At neutral point, the resultant magnetic field is:
   1. Maximum
   2. Zero
   3. Along E-W
   4. Inclined at 45 ⁰ from horizontal
4. Two like magnetic poles:
   1. Repel each other
   2. Attract each other
   3. First attract each other, then repel
   4. Neither attract nor repel
5. In a uniform magnetic field, the field lines are:
   1. Curved
   2. Parallel equidistant straight lines
   3. Parallel but non-equid spaced straight lines
   4. Nothing can be said
6. The attractive property of a magnet is maximum at:
   1. North pole only
   2. south pole only
   3. North & South Poles both
   4. mid-point of the magnet
7. Magnetic field lines can…….. each other.
   1. Always intersect
   2. Never intersect
   3. Can’t say
   4. NOT
8. The two ends of a magnet are called ………..
   1. Pole strength
   2. Poles
   3. Magnetic moment
   4. Induction
9. Unlike poles………, while like poles………..each other.
   1. Attract, repel
   2. Repel, attract
   3. Repel, repel
   4. Attract, attract
10. The magnetism is minimum at the…………in a bar magnet
    1. Top
    2. Bottom
    3. Middle
    4. None of these

SECTION II - SUBJECTIVE

1. Distinguish between natural & artificial magnet.
2. State any 4 properties of a magnet.
3. Define the terms:
   1. Poles of a magnet
   2. Magnetic axis
   3. Effective length of a magnet
4. 4. Explain the following :
   1. When 2 pins are hung by their heads from the same pole of a magnet, their pointed ends fly apart.
   2. Several soft irons pins can be hung one below the other from the pole of a magnet, but they soon fall off when the magnet is removed.
   3. The north pointing end of a compass needle which has come to rest is attracted towards a piece of soft iron placed a little distance away from it.
5. ‘Induced magnetism is temporary.’ Comment on this statement.
6. Giving reasons, state whether the following statements are true or false.
   1. The magnetic field lines between the two like poles facing each other represent a uniform magnetic field.
   2. At a neutral point, the resultant magnetic field is zero.

Solutions: to worksheet-18 Topic- Magnetism

Objective Problems: