A beaker of height H is made up of a material whose coefficient of linear thermal expansion is 3 
. It is filled up to the brim by a liquid whose coefficient of volume expansion is 3 
. If now the beaker along with its contents is uniformly heated through a small temperature T, the level of liquid will reduce by (Given, 
)
A
TH
B
3 
TH
TH
C
9 
TH
TH
D
6 
TH
TH
Text Solution
Verified by ExpertsThe correct answer is:
B
3 
TH
Let A is cross - sectional area of a beaker
Then, final cross - sectional area
a' = A [1 + 6 
T]
Final volume of liquid
V’ = AH [1 + 3 
T]
Final height, 
Reduction in level, H – H ’ = 3 
TH
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