A horse shoe magnet has two iron needles attached at its ends. Show on a diagram the positions occupied by the needles and name the phenomenon which comes into play.
Text Solution
AI Generated Solution
To solve the question regarding the horse shoe magnet with two iron needles, we will follow these steps:
### Step 1: Draw the Diagram
Begin by sketching a horse shoe magnet. The magnet should have a clear distinction between its north and south poles.
- **North Pole**: Label one end of the horse shoe magnet as the North Pole (N).
- **South Pole**: Label the other end as the South Pole (S).
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Figure shows the section of a semi-circular glass slab having its centre at O. three rays of light A,B and C of the same colour are incident on the slab and strike on the edge XY at the point O. the light ray B suffers refraction along OB'. (a) On the diagram, mark the critical angle by C. (b) The rays enter the slab undeviated. give reason. (c) Draw the path of rays A and C after they strike the edge XY. (d) Name the phenomenon which the rays A and C exhibit.
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