engineering recuitment HAL Management & Design Trainee Mock Test 2023 Engineering Mathematics Calculus Vector Calculus
The value of the integral
\(\mathop \oint \nolimits_s \vec r.\vec n\;ds\)
over the closed surface S bounding a volume V, where \(\vec r = x i + y j + z k\) is the position vector and n̂ is normal to the surface S, is1
V
2
2V
3
3V
4
4V