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A mercury thermomeeter contains 2c.c. of...

A mercury thermomeeter contains `2c.c.` of `Hg.` at `0^(@)C`. Distance between `0^(@)C` and `100^(@)C` marks on the stem is `35cm` and diameter of the bore is `0.02cm` then `gamma_(A)` of liquid is

A

`0.000055//^(0)C`

B

`0.000066//^(0)C`

C

`0.00055//^(0)C`

D

`0.000058//^(0)C`

Text Solution

Verified by Experts

The correct Answer is:
A

`DeltaV = Vgamma_(A)Deltat` ….(1), `DeltaV = Al = pir^(2)l` ……(2)
from `(1)` and `(2) Vgamma_(A)Deltat = pir^(2)t`
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Knowledge Check

  • A carnot engine first works between 100^(@)C and 0^(@)C and then between 0^(@)C and -100^(@)C . What is the ratio of its efficiency in these two cases ?

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    Very high ionisation energy and weak metallic bond
    B
    Low ionisation potential
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