Ray Model of Light (15 May)

Write your full name.

Write your form class (1A, 1B)

What is the speed of light in air?

• 3 x 10^3 m/s

• 3 x 10^8 m/s

• 3 x 10^5 m/s

• 3 x 10^7 m/s

When light reflects off a surface, the angle of incidence is ______________ to the angle of reflection.

• Lesser

• Variable

• Greater

• Equal

How do we measure the angle of incidence?

• From the mirror to the incident ray.

• From the incident ray to the normal.

• From the normal to the reflected ray.

• From the incident ray to the reflected ray.

For a rough surface, which type of reflection does light undergo?

• Regular Reflection

• Random Reflection

• Diffused Reflection

• Blurred Reflection

Which is a characteristics of an image formed by a plane mirror?

• Real

• Inverted

• Upright

• Diminished

Which type of mirror helps the user to obtain a wider field of vision?

• Plane mirror

• Convex mirror

• Concave mirror

Which type of mirror does a dentist use to view a magnified image of your tooth?

• Plane mirror

• Convex mirror

• Concave mirror

Which step is not needed when drawing a plane mirror ray diagram?

• Draw the normal with dashed lines.

• Draw the mirror image with dashed lines.

• Draw arrows to indicate the direction of the light rays.

• Measure the image distance to be twice the object distance.