Light Shadows and Reflections - Solutions

 CBSE Class–VI Subject Science

NCERT Solutions
(CHAPTER-11)
LIGHT, SHADOWS AND REFLECTIONS

Question 1. Rearrange the boxes given below to make a sentence that help us understand opaque objects.

OWS

AKE

OPAQ

UEO

BJEC

TSM

SHAD

Answer:

OPAQ

UEO

BJEC

TSM

AKE

SHAD

OWS

 Question 2. Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:

Air, Water, a piece of rock, a sheet of aluminium, a mirror, as sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.

Answer:

OpaqueTransparentTranslucentLuminousNon-luminous
A piece of rockAirA sheet of polytheneA lightened florescent tubeList of transparent objects
A sheet of aluminiumWaterFogFlame of gas burnerList of translucent objects
A CDA sheet of plane glassA sheet of cellophaneA lighted torchList of opaque objects
A sheet of carbon paper smogFireflyMoon
Iron fogStove 
An umbrella a wire meshSun 
A wall  fire fly 
A mirror     
A wooden board    
A sheet of cardboard    

Question 4. Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?

Answer: Yes,

Question 5. In a completely dark room, if you hold up a mirror in front of you, will you see reflection of yourself in the mirror?

Answer: In completely dark room, No one can see any image in the mirror, because there is no light falling on the mirror which can be reflected to show the image.

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