The amplitude of a wave represented by displacement equation $y = \frac{1}{{\sqrt a }}\,\sin \,\omega t \pm \frac{1}{{\sqrt b }}\,\cos \,\omega t$ will be
The amplitude of a wave represented by displacement equation $y = \frac{1}{{\sqrt a }}\,\sin \,\omega t \pm \frac{1}{{\sqrt b }}\,\cos \,\omega t$ will be
- A
$\frac{{a + b}}{{ab}}$
- B
$\frac{{\sqrt a + \sqrt b }}{{ab}}$
- C
$\frac{{\sqrt a \pm \sqrt b }}{{ab}}$
- D
$\sqrt {\frac{{a + b}}{{ab}}} $
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