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The length of an air column trapped in a...

The length of an air column trapped in a capillary tube by means of a mercury pellet is 5 cm at `30^@ C`. If the tube is heated uniformly to `80^@ C`, the new length of air column is :

A

`5.83 cm`

B

`6.83 cm `

C

`58.3 cm `

D

`4. 87 cm `

Text Solution

Verified by Experts

The correct Answer is:
A
At constant pressure `V_1/T_2 = V_2/T_2 rArr (5A)/302 = (lA)/253 rArr l = (5xx353)/303 cm = 5.285 cm `
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