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RAYAT SHIKSHAN SANSTHA MAHATMA GANDHI VIDYALAYA KHANAPUR

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Presentation on theme: "RAYAT SHIKSHAN SANSTHA MAHATMA GANDHI VIDYALAYA KHANAPUR"— Presentation transcript:

1 RAYAT SHIKSHAN SANSTHA MAHATMA GANDHI VIDYALAYA KHANAPUR

2 MAGNETISM STD-8TH MAGNETISM TYPES OF MAGNET CHAPTER NO. -4
1.BAR MAGNET 2.HORSESHOE MAGNET 3.DISC MAGNET 4.NEEDLE MAGNET

3 Types of Magnet 1.BAR MAGNET 2.HORSESHOE MAGNET 3.DISC MAGNET
4.NEEDLE MAGNET

4 TYPES OF MAGNETS

5 MAGNETIC SUBSTANCES NON MAGNETIC SUBSTANCES
MAGNETS MAGNETIC SUBSANCES(DEF)-Substances that are magnetic substances. attracted to a magnet are called magnetic substances. NON MAGNETIC SUBSTANCES(DEF)-Those substances that remain unaffected by a magnet are called non magnetic substances. MAGNETIC SUBSTANCES NON MAGNETIC SUBSTANCES Ex. IRON Ex. RUBBER COBALT PLASTIC NICKEL WOOD

6 Properties of magnets Coming to rest in the north-south direction when freely suspended is one of the characteristics of a magnet. The magnet’s strength is concentrated at it’s poles. Like magnetic poles repel each other. Unlike magnetic poles attract each other. The two poles of a magnet cannot be separated from each other.

7 USES OF MAGNETS PIN HOLDER REFRIGERATOR MARINER’S COMPASS
ELECTRIC TOYS RADIO DOOR CLOSERS SHUTTERS OF CUPBOARDS

8 MAGNETIC NEEDLE

9 USES OF MAGNET

10 MAGLEV TRAIN

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