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Water is poured into an inverted conical...

Water is poured into an inverted conical vessel of which the radius of the base is 2m and height 4m, at the rate of 77 lit/min. The rate at which the water level is rising at the instant when the depth is 70 cm is

A

`10 cm//min`

B

`20 cm//min`

C

`40 cm//min`

D

`30 cm//min`

Text Solution

Verified by Experts

The correct Answer is:
B
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