Waves (Sound and Light): แบบฝึกหัด

The frequency of a sound wave is measured in which of the following units?

A student observes a wave on a spring. The distance between a compression and the next adjacent rarefaction is measured to be \( 15 \text{ cm} \). What is the wavelength of this longitudinal wave?

A ray of light strikes a plane mirror at an angle of incidence of \( 35^{\circ} \) to the normal. What is the total angle between the incident ray and the reflected ray?

When a white light passes through a triangular prism, it splits into a spectrum of seven colors. What is the name of this physical phenomenon?

A convex lens is often used as a magnifying glass. When an object is placed very close to the lens (within its focal length), what are the characteristics of the image formed?

In Waves (Sound and Light), describe the relationship between the amplitude of a sound wave and the energy it carries.