Question

When sound travels from water to air as shown in figure, it goes which way?

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

Answer: (C)

$3$

For light refractive index of water is grater than refractive index of air. But speed of sound wave in water is more than the speed in air. $\therefore$ For sound wave refractive index of water is less than the refractive index of air .

Hence sound travels through path $3$.