Science ch light shadows and reflections

Define luminous objects..

• Luminous items are those that can produce light as items include the sun, star, moon and candle

• Luminous objects items are those that do not produce their own light

• Luminous objects are those which allow light to pass through them

• None of the above ( na)

Following are the examples of opaque objects

• Plastic polythene oil paper

• Butter, paper and sun

• Walls and pencil

• None of the above

What is the meaning of rectilinear propagation of light

• Light travels in a curved area

• Light travels in a circular area

• Light travels in a straight line

• Light travels to my house

How many types of objects are there?

• 12

• 8

• 25

• 3

• None of the above

Following are not the examples of non-luminous objects

• Pencil

• paper

• Sun

• Orange

Four. Students A,B,C,D LOOKED THROUGH PIPES OF DIFFERENT SHAPES TO SEE A CANDLE flame as shown in the figure, who will be able to see the candle flame clearly?

• A

• B

• C

• D

• No one will be able to see the candle flame clearly because light travels in a circular area

Which of the following is a source of light?

• Sun

• Moon

• Planet in the solar system

• My science book

We need _____ to see everything around us .

Rectilinear propagation of light means

• light bends after striking a smooth surface

• light travels in a straight line

• light travels in a curvilinear line

• both a and b

A plane mirror form an image of an object because it ........ light from the object

• absorbs

• reflects

• passes

• emits