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Questions  

 L. C and R represent the physical quantities inductance, capacitance and resistance respectively. The combinations which does not have the dimensions of frequency are

a
1RC
b
RL
c
1LC
d
CL

detailed solution

Correct option is D

CR and LR both are time constants Their units is second.∴1CR and RL have the SI unit (second)-1. Further, resonance frequency ω=1LC

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