A wave is represented by $x=0.4 \cos \left(8 t-\frac{y}{2}\right)$ where $x$ and $y$ are in meters and $t$…

A wave is represented by $x=0.4 \cos \left(8 t-\frac{y}{2}\right)$ where $x$ and $y$ are in meters and $t$ in secs. The speed of the wave is
  1. $0.5 \mathrm{~m} . \mathrm{s}^{-1}$
  2. $8 m \cdot s^{-1}$
  3. $16 \mathrm{~m} \cdot \mathrm{s}^{-1}$
  4. $0.1 \mathrm{~m} . \mathrm{s}^{-1}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2020 (07 Oct Special)

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