LIght

An object which is a source of light is called __________.

• luminous

• non-luminous

• light

• vacuum

Materials which allow light to pass through them => _________ materials.

Materials which don’t allow light to pass through them => ___________ materials.

Materials which only allow some light to pass through them => are called _________ materials.

• transparent

  opaque

  translucent

• opaque

  transparent

  translucent

• translucent

  opaque

  transparent

• translucent

  translucent

  transparent

Light is a way of transferring energy from one place to another.

• Difficult question!

• False

• True

• I do not know

Light is a special type of wave—an ________________ wave.

• electric

• electromagnetic

• magnetic

• longitudinal

For most opaque materials, the light reflected is scattered, travelling in all directions.

This is called ______________.

• lens refraction

• reflection

• specular reflection

• diffuse reflection

The image in a plane mirror:

• Is the same size as the object

• Is bigger in size than the object

• Is smaller in size than the object

• I do not know!

At what angle of incidence do the incident ray and the reflected ray travel along the same path?

• 0°

• 90°

• 45°

• 180°

The separation of colors is called ___________.

• prism

• spectrum

• dispersion

• filter

The two lenses located in the eye are:

• Pupil and Cornea

• Cornea and lens

• Lens and sclera

• Blind spot and iris

Which travels fastest?

• Light

• Sound

• Aliens

• Cheetah