Equation of a plane progressive wave is given by y=A1sin π(t−x3). After reflecting from a rarer medium amplitude of reflected wave becomes A2. The equation of the reflected wave can be
The correct option is C A2sin π(t+x3)
As waves enters from denser to rarer medium therefore reflected will not be inverted .
Also, the reflected wave will have same speed but propagate in opposite direction to the incident wave.