Waves

Which of the following is true for all electromagnetic waves in a vacuum?

What property of a wave is measured in metres?

In a displacement-distance graph, what is the horizontal distance from a crest to the next trough?

What happens to the frequency of a sound wave as it travels from air into water?

What type of wave is an S-wave (secondary wave) produced during an earthquake?

If two identical waves interfere destructively, what is the resultant displacement at that point?

What is the refractive index of a substance if light travels through it at $2.0 \times 10^8\text{ m/s}$?

Two waves with intensities $I$ and $4I$ interfere constructively. What is the resultant intensity at that point?

A wave pulse on a string is described by $y(x,t) = \frac{2}{(x - 3t)^2 + 1}$. At what speed and in which direction is the pulse traveling?

A laser beam is passed through a single slit of width $0.10\text{ mm}$. The diffraction pattern is observed on a screen $2.0\text{ m}$ away. The distance from the center of the pattern to the second minimum is $1.6\text{ cm}$. What is the wavelength of the laser light?

Which of the following describes the nature of light?

What happens to the wavelength of light as it enters a more optically dense medium?

Light travels in straight lines. This property is known as:

What is the formula for calculating the critical angle ($c$) using the refractive index ($n$) of the denser medium (when the second medium is air)?

Which statement best describes the nature of light waves?

A real image is produced by a converging lens. If the object distance ($u$) is equal to the image distance ($v$), what is the relationship between $u$ and the focal length $f$?

What is the main reason a swimming pool appears shallower than it actually is?

A ray of light is incident on one face of a $60^\circ$ glass prism at an angle of $40^\circ$. The refractive index of the glass is $1.55$. What is the total deviation of the ray?

Which transition in the EM spectrum corresponds to a change from a wavelength of $1$ mm to $1$ $\mu$m?

A glass slab of refractive index $1.5$ is $6$ cm thick. A mark at the bottom of the slab is viewed from above. If the slab is then moved upwards by $2$ cm, how much does the apparent position of the mark move?

Which wave type is characterized by having the highest frequency in the electromagnetic spectrum?

Which of the following statements is true about electromagnetic waves?

Which property of an electromagnetic wave changes when it moves from a vacuum into a glass block?

Which type of wave is used for television broadcasting using large antennas?

Given that the speed of light is $3.0 \times 10^8 \text{ m/s}$, how many cycles of a $100 \text{ MHz}$ radio wave occur in $1$ second?

Which of the following describes the behavior of short-wave radio signals (high frequency) in the Earth's atmosphere?

What is the typical range of wavelengths for visible light?

A microwave oven operates at $2.45$ GHz. What is the distance between two consecutive nodes in the standing wave pattern formed inside the oven?

An EM wave is defined by the following characteristics: it is not deflected by electric fields, it can be polarized, and it causes ionization in gases. Which of the following could it be?

In an optical fiber, why is it necessary to use infrared light (typically $1550$ nm) rather than visible light for long-distance communication?

If the distance between a compression and the next adjacent rarefaction is $0.5\ m$, what is the wavelength of the sound wave?

What is the name of the effect where sound bends around the edge of a doorway?

If a wave is shown on an oscilloscope and its peaks are $4\ cm$ apart, and the time base is set to $1\ ms/cm$, what is the period of the wave?

Which of these devices can be used to visualize the waveform of a sound?

Two speakers are connected to the same signal generator and produce coherent sound waves with a frequency of $680\text{ Hz}$. A microphone is placed at point $P$. If the speed of sound in air is $340\text{ m/s}$, which of the following path differences between the speakers and point $P$ would result in the microphone detecting a sound of minimum intensity (a quiet spot)?

If the distance between a sound source and a listener is doubled, what happens to the intensity of the sound (assuming no reflections)?

The 'timbre' or quality of a musical note is determined by:

For a sound wave, which property is independent of the others?

Calculate the speed of sound in dry air at $40^{\circ}\text{C}$, given that the speed of sound at $0^{\circ}\text{C}$ is $331\text{ m/s}$.

A sound wave is modeled as $p = p_0 \cos(kx - \omega t)$. If the pressure amplitude $p_0$ is doubled, how does the intensity change?