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Wave Motion and Waves on a String — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsWave Motion and Waves on a String1 Mark
Question
A wave is represented by an equation $\text{y}=\text{c}_1\sin(\text{c}_2\text{x}+\text{c}_3\text{t}).$ In which direction is the wave going ? Assume that $c_1, c_2$ and $c_3$ are all positive.
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Answer

Equation of the wave is.$\text{y}=\text{c}_1\sin(\text{c}_2\text{x}+\text{c}_3\text{t})$
When the variable of the equation is $(c_2x + c_3t)$, then the wave must be moving in the negative $x-$axis with time $t.$

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