The oscillations represented by curve 1 in the graph are expressed by equation`x=Asinomegat.` The equation for the oscillation represented by curve `2` is expressed as

Options

A. `x=2A sin (omegat-pi//2)`
B. `x=2Asin(omegat+pi//2)`
C. `x=-2Asin(omegat-pi//2)`
D. `x=A sin (omegat-pi//2)`

Answer

A

Explanation

Oscillations represented by curve 2 lags in phase by `pi//2` and the periods are same. Amplitudes of curve 2 is double that of 1.
Hence (1).