Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Water is being filled at the rate of 
in a right circular conical vessel (vertex downwards) of height 
and diameter 
. When the height of the water level is 
, the rate 
) at which the wet conical surface area of the vessel increases is
A
5
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
From figure 
Given 
Let wet conical surface area 
When 
then 
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