Bhawna witnessed an interesting game at the fair. A duck was floating in a tub. when a plate containing grains of rice in one side and some pebbles, was bought closer, When the rice portion faced the duck, it moved towards the plate. But when the same plate was bought close to the duck, with pebbles in front, the duck moved away from plate. find out the possible reason behind it. (hint: magnets attached on the bottom of plate and toy duck)
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This game is based on the plate containing rice which may have magnet attached to its bottom. The magnet is fitted in such a way that its north-pole points towards rice grains, while south-pole indicates towards pebbles. A magnet (bar magnet) may also be fitted in the bottom of the duck, where south-pole points towards mouth and north-pole towards tail of the duck.
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