MCQ
The resultant capacitance of given circuit is


- ✓$3C$
- B$2C$
- C$C$
- D$\frac{C}{3}$


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$I.$ Waves created on the surfaces of a water pond by a vibrating sources.
$II.$ Wave created by an oscillating electric field in air.
$III.$ Sound waves travelling under water.
Which of these can be polarized
$y_1 = \sin \left( {\omega t + \frac{\pi }{3}} \right)$ and $y_2 = \sin \omega t$ is :