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$\frac{{\sqrt {a + b} }}{{\sqrt {ab} }}$
  • B$\frac{{\sqrt a  + \sqrt b }}{{ab}}$
  • C$\frac{{\sqrt a  - \sqrt b }}{{ab}}$
  • D$\frac{{\sqrt {a - b} }}{{\sqrt {ab} }}$
Medium
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