Question
Dimensionally wavelength is equivalent to
A.
$$\frac{{E\sqrt {LC} }}{B}$$
B.
$$\frac{E}{{B\sqrt {LC} }}$$
C.
$$\frac{{B\sqrt {LC} }}{E}$$
D.
$$\frac{B}{{E\sqrt {LC} }}$$
Answer :
$$\frac{{E\sqrt {LC} }}{B}$$
Solution :
$$\eqalign{
& \frac{E}{B} = {\text{velocity}} = m/s\,{\text{and}} \cr
& \sqrt {LC} = {\text{time}}\,{\text{period}} = s \cr
& \therefore \frac{{E\sqrt {LC} }}{B} = m = {\text{wavelength}} \cr} $$