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Application of Derivatives question

2005 · Shift 0 · Q73

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PYQ Library
JEE Main
Mathematics
Application of Derivatives
2005 · Shift 0 · Q73

Application of Derivatives question

2005 · Shift 0 · Q73

JEE MainMathematicsApplication of DerivativesMCQ+4 / −1

A spherical iron ball

10

cm in radius is coated with a layer of ice of uniform thickness that melts at a rate of

50

cm

^3

/min. When the thickness of ice is

5

cm, then the rate at which the thickness of ice decreases is

A
${1 \over {36\pi }}$ cm/min
B
${1 \over {18\pi }}$ cm/min
C
${1 \over {54\pi }}$ cm/min
D
${5 \over {6\pi }}$ cm/min

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