Light, Shadows and Reflections

Which one of the following is the natural source of light?

• Electric bulb

• Sun

• Tube light

• Moon

The object which does not have light of its own is

• shining mirror

• light bulb

• star

• lighted match box

Stars are

• luminous

• non-luminous

• both of these

• none of these

Which of the following is a non-luminous objects?

• Moon

• Sun

• Earth

• Stars

• None of these

Objects that do not give out or emit light of their own are called

• luminous

• non-luminous

• opaque

• translucent

Which of the following is a luminous object?

• Pencil

• Chair

• Sun

• Table

The objects which allow light to pass through them are called

• transparent

• opaque

• translucent

• none of these

Air is

• transparent

• translucent

• both of these

• none of these

Glass sheet is a/an

• translucent object

• opaque object

• transparent object

• none of these

Substances through which light can pass partially and things cannot be seen clearly through them are

• transparent

• opaque

• translucent

• none of these