A positively charged $(+ q)$ particle of mass $m$ has kinetic energy $K$ enters vertically downward in a horizontal field of magnetic induction $\overrightarrow B $ . The acceleration of the particle is :-
A positively charged $(+ q)$ particle of mass $m$ has kinetic energy $K$ enters vertically downward in a horizontal field of magnetic induction $\overrightarrow B $ . The acceleration of the particle is :-
- A
$qB\sqrt {\frac{{2K}}{m}} $
- B
$\frac{{qB\sqrt {2K} }}{{{{(m)}^{\frac{3}{2}}}}}$
- C
$\frac{{2qB}}{{{{(m)}^{\frac{3}{2}}}}}\sqrt {2K} $
- D
$2qB\sqrt {\frac{{2K}}{m}} $
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