Equation of a wave travelling in a medium is: `y=a sin (bt-cx)`. Which of the following are correct?

A plane wave y =a sin (bx + ct) is incident on a surface. Equation of the reflected wave is y' = a' sin(ct-bx) . Which of the following statements is not correct ?

A plane wave y =a sin (bx + ct) is incident on a surface. Equation of the reflected wave is y' = a' sin(ct-bx) . Which of the following statements is not correct ?

A plane wave y =a sin (bx + ct) is incident on a surface. Equation of the reflected wave is y' = a' sin(ct-bx) . Which of the following statements is not correct ?

A plane wave y =a sin (bx + ct) is incident on a surface. Equation of the reflected wave is y' = a' sin(ct-bx) . Which of the following statements is not correct ?

When a wave travelling from one medium is refracted into other medium, which of the following will not change?

Light wave is travelling along X-axis in a medium. Which of the following can represent wavefront for this light wave ?

Following is given the equation of a travelling wave (all is SI unit) y = (0.02) sin 2pi (10t - 5x) Match of following.