Physics Study Guide

The number of current paths in a series circuit is:

1

Drawing a ray diagram for an object far from convex lens requires how many rays?

2

Which scenario would result in a drop in the pitch being observed?

A source moving toward an observer suddenly stops.

The focal length of a spherical mirror is _____ the radius of curvature of the mirror.

Half

What is true regarding how objects can be seen?

Illuminance reflects light Illuminated produces light

A grandfather clock keeps time using a pendulum. Which will be true of the clock if the pendulum is shortened?

It will run fast.

The distance of an illuminated object from its light source is decreased to 1/3 while the luminous flux remains constant. What is true of the illuminance on the object?

Multiply by 9

Which term describes a material that does not allow light to be transmitted?

Opaque

Which type of resonator has harmonics in whole-number multiples of the fundamental?

Open pipe and string

A concave mirror produces a larger, inverted, real image. What is true regarding the image distance?

Past the curvature

What kind of image is formed by convergent rays?

Real

Which type of image is produced by a convex mirror?

Reduced and virtual

What is the size and position of an image formed by a plane mirror?

Same size Position = same distance

A concave mirror can produce either real or virtual images.

True

A conventional current is the flow of positive charges that move from a higher to lower potential energy.

True

A convex mirror forms a virtual, diminished, and upright image for all real objects regardless of the location of the object.

True

Circuit breakers are connected in series so that the circuit will open in case of dangerously high current.

True

Destructive interference between two superimposed waves can result in a node, or point with no displacement.

True

Light always travels in a straight line.

True

Resistance is a property that determines how much current will flow in a circuit.

True

The focal point is the point through which parallel incident rays reflecting off the surface of a concave mirror converge.

True

The height of an image as seen in a plane mirror is the same as the actual height of the object.

True

The normal with regard to reflection is perpendicular to the surface of a plane mirror.

True

The period and frequency of a wave are inversely related.

True

The period of a simple harmonic oscillator is the time it takes for one complete cycle of oscillation to be completed.

True

The virtual image produced by a plane mirror appears to be the same distance away from the mirror as the object itself.

True

Waves that collide with a barrier will reflect at an angle equal to the angle of incidence.

True

When work is done on a spring to stretch it, elastic potential energy is stored in the spring.

True

Without a fuse or circuit breaker, the current caused by a short circuit easily could start a fire.

True

A concave lens always produces what type of image?

Virtual

What kind of image is formed of divergent rays?

Virtual

What is the nature of an image formed by a concave mirror of focal length 10 cm for a real object placed 3 cm from the mirror?

Virtual and upright

A/An _____ is a type of electric circuit in which there are multiple paths, whereas a/an _____ is a type of electric circuit in which there is a single current path.

parallel, series

_____ is described as a property that determines how much current will flow for a given battery voltage.

resistance

A _____ is described as a device with specific resistance and is used to control current, whereas a ______ coverts chemical energy to electric energy.

resistor, battery

The wavelength of light in a medium is ______ the wavelength of light in a vacuum.

shorter

Blue and red are complementary colors.

False

Convex mirrors can produce both real and virtual images.

False

Magnifications with values greater than one represent images that are smaller than the object.

False

When the length of a pendulum is doubled, its frequency will be cut in half.

False

When the volume of an illuminated spherical object is doubled, the luminous flux is quadrupled.

False

Where do incident rays that are parallel to the principal axis converge to after reflecting off a concave mirror?

Focal point

The constant "n" in Snell's Law of Reflection depends upon:

material involved

What happens to the path of a light ray parallel to the principal axis, after it passes through a converging lens?

Goes through focus on other side

If an object is placed at twice the focal length of a convex lens, what is the position of the image?

Behind the lens, inverted

A concave mirror produces a smaller, inverted, real image. Which is true regarding the image distance?

Between curvature and focal point

A parallel connection is a type of electric circuit in which there is a single current path.

False

A series connection is a type of electric circuit in which there are multiple paths.

False

By definition, what type of mirror has its edges curved toward the object?

Concave

What type of mirror has its edges curved away from the object?

Convex

Which of the following objects can set a piece of paper on fire in the presence of sunlight?

Convex

If a resistor is added to a series circuit, the equivalent resistance:

add ohms of resistors

If a resistor is added to a parallel circuit, the equivalent resistance:

add reciprocals of ohms

A _______ is described as a device that converts chemical energy to electric energy.

battery

A magnifying glass is an example of ______.

converging and convex

In a series circuit, each circuit element has the same:

current flow

A/An ____ is described as a closed loop or pathway that allows electric charges to flow.

electrical circuit