a) NAME AND STATE THE PRINCIPLE OF CHECKING PURITY OF MILK BY LACTOMETER.
​b) EXPLAIN ONE OF ITS TWO APLLICATIONS ?

Dear Student,

(a) The Principle involved in checking the purity of milk.
      Archimedes Principle - When an object is fully or partially immersed in a liquid, it absorbs an upthrust or buoyant
force which is equal to the weight of the body.

(b) The main application of Archimedes Principle is that the bottom of the ships is made flat to provide large surface area  Large surface areas displace large amount of water making it easy for ship to float.​

Hope this information clears your doubts about the topic.

Keep asking!!

Regards

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