Physics: Waves, Sound, and Light

If the wavelength of a wave is $2 m$ and its frequency is $10 Hz$, what is its speed?

What type of wave is produced by a person shouting?

Which of these is NOT a property of a wave?

What is the relationship between frequency ($f$) and period ($T$)?

A student is asked to classify two different types of mechanical waves based on the relationship between the direction of the wave's energy and the motion of the particles in the medium. Based on the characteristics shown in the flowchart, which statement correctly identifies the wave types?

If you see a lightning bolt and hear the thunder $3 seconds$ later, roughly how far away is the storm? (Speed of sound $\approx 340 m/s$)

Refraction occurs because light changes its _____ when it enters a different medium.

Which of the following describes the behavior of a wave during 'diffraction'?

A wave has a period of $0.05\,s$. What is its frequency?

An electromagnetic wave enters a diamond from air. Its speed drops significantly. What happens to its frequency?

The 'amplitude' of a longitudinal wave is related to:

When the frequency of a sound wave increases, its period:

What is the speed of sound in air at room temperature approximately?

A wave has a speed of $30\text{ m/s}$ and a frequency of $6\text{ Hz}$. What is the wavelength?

Which of the following would result in a wave having the highest speed?

If a radio station broadcasts at a frequency of $100\text{ MHz}$ ($100 \times 10^6\text{ Hz}$), and the speed of light is $3 \times 10^8\text{ m/s}$, what is the wavelength of the radio waves?

The diagram shows a wave. If the distance from the rest position to the top is $2\text{ cm}$, and the total distance from one peak to the next is $10\text{ cm}$, what are the amplitude and wavelength?

A string $2\text{ m}$ long is vibrated such that it forms 4 segments (2 full wavelengths). If the frequency of vibration is $60\text{ Hz}$, what is the speed of the wave on the string?

A wave travels along a rope. If the user doubles the frequency of the hand's motion and the rope's tension is kept constant, which statement is true about the wave's speed?

If the energy of a wave is doubled, and the frequency remains constant, what is the approximate increase in the amplitude of the wave?

What happens to light when it enters an opaque object?

Light travels in which kind of lines?

Which of these surfaces would give the best specular reflection?

A high-pitched sound always has a high:

A ray of light strikes Mirror 1 at an angle of incidence of $35^{\circ}$. Mirror 1 is positioned perpendicular (at a $90^{\circ}$ angle) to Mirror 2. After reflecting off Mirror 1, the ray hits Mirror 2. What is the angle of reflection at Mirror 2?

When light passes from air into water, which direction does it bend relative to the normal?

If a wave completes $20$ cycles in $4 \text{ seconds}$, what is its frequency?

If a source produces $300$ waves per minute and the speed of the waves is $10 \text{ m/s}$, what is the distance between two consecutive troughs?

An image formed by a plane mirror is always:

In a longitudinal wave, the distance between one compression and the next rarefaction is $0.5 \text{ m}$. What is the wavelength of the wave?

Which of these is the correct definition of a 'period' in a wave?

Sound waves consist of a series of:

Which frequency would most likely be heard by a dog but not a human?

In a tuning fork experiment, hitting one fork and seeing a nearby identical fork start to vibrate is an example of:

If a person moves away from a stationary sound source, how does the pitch they hear change (Doppler Effect)?

Which of the following is true about natural frequency?

Exposure to sounds above which level for long periods can cause permanent hearing damage?

A Tacoma Narrows Bridge-style collapse is a classic example of:

What happens to the wavelength of a sound wave if its frequency is doubled and it moves from air into a medium where the speed of sound is also doubled?

The intensity of sound is measured in Watts per square meter ($W/m^2$). If the intensity is $10^{-12}\text{ W/m}^2$, what is the decibel level?

An object that does not let any light through is:

What do all electromagnetic waves have in common when traveling in a vacuum?

Which of these is used for thermal imaging (night vision)?

What is the formula for wave speed ($v$)?

What property of light allows us to see objects that do not produce their own light?

Why can we not hear sound in outer space?

Which electromagnetic wave has the lowest energy per photon?

Which of the following is NOT an application of microwaves?

A wave is traveling through a medium. If the amplitude of the wave is tripled, how does the energy carried by the wave change?

Why do stars 'twinkle' when viewed from the Earth's surface but appear as steady points of light from space?

Which color comes directly after Orange in the visible spectrum?

What type of wave is light?

In the subtractive color model (pigments), mixing Magenta and Yellow makes:

In the subtractive color model (pigments), mixing Yellow and Cyan makes:

The refractive index of a material is a measure of how much it slows down light. If a material has a high refractive index, how does light behave when entering it from air?

What color would a blue book appear if you viewed it through a yellow filter?

Which of the following colors is NOT a primary color of light?

Calculate the speed of light in a material with a refractive index of $2.0$. (Take $c = 3.0 \times 10^8$ m/s)

If an object is placed at the center of curvature ($2F$) of a converging (convex) lens, the image formed is:

Why is the order of colors in a rainbow always the same (Red on top, Violet on bottom for primary)?

What does a frequency of $1\ kHz$ equal?

Which of these frequencies is the lowest ultrasound frequency?

When a sound wave travels through water, its speed is ________ than in air.

What is the distance between two consecutive compressions in a sound wave?

If a star is moving toward Earth, its light is shifted toward higher frequencies. This is called:

Which type of wave is a sound wave (including ultrasound)?

What is the main reason X-rays are not used for routine checks of a fetus?

A $2\text{ MHz}$ ultrasound pulse travels through $10\text{ cm}$ of tissue ($v = 1540\text{ m/s}$), reflects off a bone, and returns. How many cycles of the wave occurred during the total round trip?

Which of the following frequency shifts represents the largest velocity of an object moving toward an observer, given a source frequency of $1000\text{ Hz}$?

A dolphin emits a click and receives an echo from a fish in $0.1\text{ s}$. If the speed of sound in water is $1500\text{ m/s}$, and the dolphin starts swimming toward the fish, the next echo $0.1\text{ s}$ later will return in:

When light 'bounces' off a surface, it is called:

What is the 'trough' of a wave?

Which device is used to measure and display wave patterns like sound or light pulses?

What is the typical range of human hearing?

A light ray in a fiber optic core hits the boundary. If the refractive index of the core is $1.55$ and the cladding is $1.50$, what is the critical angle approximately?

How does increasing the frequency of the carrier wave affect data transmission?

Which of the following is NOT a part of a standard optical fiber communication link?

Optical fiber communication is considered more secure than copper wire communication because:

In a 'step-index' fiber, the refractive index profile is best described as:

What is the primary reason why silica glass must be extremely pure for fiber optics?