Sec 1 Ch5 Light

An imaginary line that is perpendicular to the reflecting surface e.g. a mirror is known as the ____.

• normal

• incident ray

• reflected ray

• angle of incidence

The angle between the _______ and the incident ray is known as the angle of ____.

• normal; reflection

• normal; incidence

• reflected ray; incidence

• reflected ray; reflection

Which of the following is NOT a property of an image formed by a plane mirror?

• virtual

• laterially inverted

• upside down

• same size

Which type of mirror forms a small field of vision with enlarged objects?

• plane mirror

• concave mirror

• convex mirror

• rear-view mirror

Rough surfaces do not form an image because

• there is no reflection on rough surfaces

• the reflected rays are at different angles

• the reflected rays are parallel

• the reflected images are undistorted and clear

A ray of light travelling in another medium at a different speed is known as the

• normal

• incident ray

• refracted ray

• emergent ray

A glass prism can be used to split white light into its component colours. This is known as __________ of light.

When light rays move from an optically denser medium to a less dense medium, light rays move _______ the normal.

Light travels slower and bends more towards the normal is a _______ (more/less) optically dense medium.

Light travels from n1 to n2. Based on the refraction of light, determine if n1 or n2 is an optically denser medium.

• n1 > n2

• n2 > n1

• same optical densities