Physics Objective Type Questions Review

This set of flashcards covers key vocabulary and concepts related to the physics objectives outlined in the lecture notes.

Pitch

The characteristic of a wave that determines how high or low a sound is, primarily associated with the frequency of the wave.

Luminous Object

An object that produces light of its own by any method.

Photon Emission

Occurs when an electron shifts to a quantum state of lower energy.

Doppler Effect

The shifting of frequency heard when the distance between a sound source and listener changes.

Resonance

A phenomenon where a system's natural frequency enhances the intensity of vibration due to sympathetic vibration.

Wavelength

The distance between successive crests or troughs in a wave.

Refraction

The bending of light when it passes through different mediums.

Amplitude

The maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Fundamental Frequency

The lowest frequency of a periodic waveform, often corresponded to a standing wave pattern.

Photoelectric Effect

The phenomenon where electrons are ejected from a material when it is exposed to light.

Index of Refraction

The ratio of the speed of light in a vacuum to the speed of light in a material.

Standing Wave

A wave that remains in a constant position, characterized by nodes and antinodes.

Inverted Image

An image that is flipped upside down compared to the object.

Efficacy of Light Source

The measure of the luminous output (lumens) per watt of input power.

Ultraviolet Radiation

Electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays.

Intensity of Sound

The power carried by sound waves per unit area, measured in watts per square meter.

Longitudinal Wave

A wave in which the displacement of the medium is in the same direction as the wave travels.

Harmonic

A frequency that is a whole number multiple of a fundamental frequency.

Crest

The highest point of a wave.

Virtual Image

An image where the light rays appear to diverge from a point but do not actually converge there.

SI Unit for Light Intensity

Candela, the standard unit for measuring luminous intensity.