mag yesy

1

What type of image is formed if the object is located at the focal length of a mirror?

No image is formed.

Can a diverging lens ever form a real image?

No, it always forms a virtual image.

What type of material transmits incident light?

Transparent

What type of material transmits only some incident light?

Translucent

What type of material transmits no incident light?

Opaque

What type of reflection involves parallel incident rays being reflected back as parallel rays?

Specular Reflection

If light hits a plane mirror at an angle of 40 degrees, what is the angle or reflection?

40 degrees

In a lateral inversion, how do the letters of a word appear?

Backwards

Where is a real image located for a concave mirror?

On the same side of the mirror as the object

Which type of mirror is used to see around corners?

Convex

Which type of mirror is used in a telescope

Concave

The rays reflected from a mirror are parallel. What type of image is formed?

No image is formed.

In any material besides vacuum, the speed of light ...

is slower than in vacuum.

Total internal reflection requires moving from a ______________ medium to a _________________ medium.

slower, faster

Fiber optics are based on what principle?

Total internal reflection.

The critical angle necessary for total internal reflection is calculated using what equation?

Snell’s Law

Retroreflectors are useful in safety applications because they do what?

Reflect light straight back to the source

Where is a virtual image located for a lens?

On the same side of the lens as the object.

If the magnification of a lens is negative, what do we know about the image compared to the object?

The image is inverted.

If the magnitude of the magnification of an image is less than one, what do we know about the image compared to the object?

The image is smaller.

What is the focal point of a concave mirror used for?

The focus parallel light rays.

In which scenario does a convex mirror create a virtual image?

In all scenarios with real objects

What does the principal axis of a curved mirror represent?

The axis on which the mirror sits.

What happens to light rays that hit a convex mirror parallel to the principal axis?

They diverge and appear to come from the focal point.

How is the distance from the vertex to the image described in a concave mirror when the image is real?

Always positive.

In the following figure, where should the reflected ray go?

Through F.

Which of the following options best describes the image formed in the below scenario?

Real, inverted

Which of the following images contains a diverging lens?

D - The line behind 2F.

Where should the refracted ray associated with the green incident ray in the below image go?

Parallel to the principal axis.

Where should the refracted ray go in the below image?

As if it came from F.

What are the two poles that every magnet has?

North and South

What happens when a bar magnet is broken into two pieces?

Each piece becomes a separate magnet with its poles.

Which law explains how a changing magnetic field can produce an electric current?

Faraday’s Law of Induction

What is the primary role of Earth’s magnetic field in relatuomn to the solar wind?

Protects Earth from high-energy charged particles.

What type of waves are used in medicine to kill cancer cells?

Gamma rays

What phenomenon allows birds to navigate using the Earth's magnetic field?

Magnetoreception

What is a light-year a measure of?

Distance light can travel in one year

Which component is necessary to generate a planet's magnetic field?

Rapidly rotating liquid metallic core

Which type of electromagnetic radiation is used to broadcast television signals?

Radio waves

What happens to an object when it is placed at the center of a magnetic field generated by a coil of wires?

A current is induced in the object