Question

the shape of the thermometer is made prismatic ,why

Answer 1

It is made prismatic to refract maximum light towards its base & make mercury shining. It makes easy to take reading.

Answer 2

Explanation:

• Thermometer is purposely shaped into a Prism so that when you hold the thermometer with the reading scale on your reading side.
• Then the light entering the prism should be reflected towards its base thereby allowing the Mercury inside it to shine and easy to see.
• Since the light is refracted and mercury becomes easy to see, taking readings become easier.
• Also the Prismatic shape of the thermometer gives a proper grip to hold among fingers like a pencil.

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