General Physics Ques 20
- $L, C$ and $R$ represent the physical quantities inductance, capacitance and resistance, respectively. The combinations which have the dimensions of frequency are
$\quad(1984,2 M$ )
(a) $\frac{1}{R C}$
(b) $\frac{R}{L}$
(c) $\frac{1}{\sqrt{L C}}$
(d) $\frac{C}{L}$
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Answer:
Correct Answer: 20.( a, b, c )
Solution:
- $C R$ and $\frac{L}{R}$ both are time constants. Their unit is second.
$\therefore \frac{1}{C R}$ and $\frac{R}{L}$ have the SI unit (second $)^{-1}$. Further,
resonance frequency, $\omega=\frac{1}{\sqrt{L C}}$
BETA
