Physics-12 Light Prequiz

A _____ is a device that generates a beam of coherent light

• laser

• incident ray

• reflected ray

• angle of incidence

• angle of reflection

Answer explanation

激光 A laser is a device that generates a beam of coherent light.

Tags

NGSS.HS-PS4-5

NGSS.HS-PS4-3

A(n) ________ is the ray that comes from an object and strikes a surface.

• laser

• incident ray

• reflected ray

• angle of incidence

• angle of reflection

Answer explanation

入射光 The incident ray is the ray that comes from an object and strikes a surface.

Tags

NGSS.MS-PS4-2

The ray of light that bounces back from the surface of reflection is called the _______.

• laser

• incident ray

• reflected ray

• angle of incidence

• angle of reflection

Answer explanation

反射光线 The reflected rays is the light ray that bounces off a surface.

Tags

NGSS.MS-PS4-2

The _______, is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal.

• laser

• incident ray

• reflected ray

• angle of incidence

• angle of reflection

Answer explanation

入射角 The angle of incidence is the angle between the incident ray and the normal

The _____ is the line in a ray diagram that shows the direction of the barrier and is drawn at a right angle, or perpendicular, to the barrier. (The red line)

• normal

• laterally inverted

• real image

• virtual image

• angle of reflection

Answer explanation

法线 The Normal is the line in a ray diagram that shows the direction of the barrier and is drawn at a right angle, or perpendicular, to the barrier

An image in which left and right have been reversed

• normal

• laterally inverted

• real image

• virtual image

• angle of reflection

Answer explanation

横向倒置 A Laterally inverted image is one in which left and right have been reversed

An image that is formed by the intersection of light rays; a _____ can be projected on a screen

• normal

• laterally inverted

• real image

• virtual image

• angle of reflection

Answer explanation

实像 An image that is formed by the intersection of light rays; a real image can be projected on a screen

Tags

NGSS.HS-PS4-5

An image that forms at a location from which light rays appear to come but do not actually come:

• normal

• laterally inverted

• real image

• virtual image

• angle of reflection

Answer explanation

虚拟图像 An image that forms at a location from which light rays appear to come but do not actually come is a virtual image.

This is a measure of the light-bending ability of a medium

• normal

• refractive index

• critical angle

• total internal reflection

• refraction

Answer explanation

折射率 The refractive indexa measure of the light-bending ability of a medium

________ is the complete reflection that takes place within a substance when the angle of incidence of light striking the surface boundary is less than the critical angle

• normal

• refractive index

• critical angle

• total internal reflection

• refraction

Answer explanation

全内反射 Total Internal reflection is the complete reflection that takes place within a substance when the angle of incidence of light striking the surface boundary is less than the critical angle