Chapter 9, Problem 5STP

To determine

To Choose: The correct option.

Answer to Problem 5STP

Option C

Explanation of Solution

Introduction:

The period of a wave is reciprocal of the frequency of the wave.

The number of cycles of waves in a certain time is called frequency of the wave $\text{'}n\text{'}$ and time taken to complete on cycle is called period of the wave $\text{'}T\text{'}$

  $\left(T=\frac{1}{n}\right)$ .

Therefore, the option C is correct.

Incidence angle is the angle which the incident ray makes with a perpendicular to the surface at point of incident.Thus, the option A is incorrect.

When there is maximum displacement of a particle of medium from its mean position, it is called the amplitude of the wave.Thus, the option B is incorrect.

The length travelled by the wave in completing one cycle is called wavelength of the wave. Thus, the option D is incorrect.

Conclusion:

Thus option C is correct.