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Suppose that we have a vernier callipers which does not expand or contract on heating. Such a device is very useful in engineering applications where the dimensions are to be found at different temperatures. One such vernier callipers is used to measure the diameter of a rod at different temperatures as shown in table below. What will be the vernier scale reading (division coinciding) at a temperature of 50∘C.Given that 10 vernier scale divisions coincide with 9 main scale divisions and 1 main scale division is equal to 1 mm. Temperature T in ∘C 0 20 Main scale reading 2.4 cm 2.4 cm Vernier scale reading 4th division coinciding 8th division coinciding |
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Answer» Suppose that we have a vernier callipers which does not expand or contract on heating. Such a device is very useful in engineering applications where the dimensions are to be found at different temperatures. One such vernier callipers is used to measure the diameter of a rod at different temperatures as shown in table below. What will be the vernier scale reading (division coinciding) at a temperature of 50∘C. Given that 10 vernier scale divisions coincide with 9 main scale divisions and 1 main scale division is equal to 1 mm.
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