# PAF Physics MCQs

## The Vortex Filament, Biot-Savart Law, Helmholtz Theorem MCQs

Solved Physics MCQs of Physics for PAF jobs/

To include the effects of point vortices can the vortex filament equation be modified?
(A). False
(B). True
(C). Partially True

For computing, the resultant magnetic field Biot-savant law is used.
(A). True
(B). False
(C). Partially True

Around a closed curve usually, there is integral?
(A). True
(B). False
(C). Partially True

Helmholtz’s theorems are applied to inviscid flows.
(A). True
(B). False
(C). Partially True

Vortex tube strength varies with time.
(A). False
(B). True
(C). Partially True

The vortex filament has a very thin strip.
(A). True
(B). False
(C). Partially True

To disturbances and tend to roll up the thin strips of vorticity are unstable.
(A). False
(B). True
(C). Partially True

The circular filament has constant thickness?
(A). True
(B). False
(C). Partially True

When the sources are invariant in one direction 2D version of the Biot-Savart equation is used.
(A). True
(B). False
(C). Partially True