If a charged particle goes unaccelerated in a region containing electric and magnetic fields,
(i) `vec(E)` must be perpendicular to `vec(B)`
(ii) `vec(v)` must be perpendicular to `vec(E)`
(iii) `vec(v)` must be perpendicular to `vec(B)`
(iv)`E` must be equal to `v B`

If vec(A) is perpendicular to vec(B) , then

If vec(A) is perpendicular to vec(B) , then

If (vec(A) + vec(B)) is perpendicular to vec(B) and (vec(A) + 2 vec(B)) is perpendicular to vec(A) , then

A charged particle goes undeflected in a region containing electric and magnetic field. It is possible that (i) vec(E) || vec(B). vec(v) || vec(E) (ii) vec(E) is not parallel to vec(B) (iii) vec(v) || vec(B) but vec(E) is not parallel to vec(B) (iv) vec(E)||vec(B) but vec(v) is not parallel to vec(E)

A charged particle goes undeflected in a region containing electric and magnetic field. It is possible that (i) vec(E) || vec(B). vec(v) || vec(E) (ii) vec(E) is not parallel to vec(B) (iii) vec(v) || vec(B) but vec(E) is not parallel to vec(B) (iv) vec(E)||vec(B) but vec(v) is not parallel to vec(E)

If vec a+vec b is perpendicular to vec b and vec a+vec 2b is perpendicular to vec a then

If vec(v)_(1)+vec(v)_(2) is perpendicular to vec(v)_(1)-vec(v)_(2) , then

If vec(v)_(1)+vec(v)_(2) is perpendicular to vec(v)_(1)-vec(v)_(2) , then

If vec(A) and vec(B) are perpendicular then vec(A) . vec(B)= . . . .