CUET and UG exam CUET UG 2025 Mock Test Series Mathematics Differential Calculus Applications of Derivatives
The rate at which the radius of a sphere changes over time is \(\frac{1}{2\pi}\). When the radius is 5 cm, then the rate of change of the lightning surface area of the sphere will be:
1
5 cm2/sec
2
20 cm2/sec
3
15 cm2/sec
4
10 cm2/sec