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:
| Opaque | Transparent | Translucent | Luminous | Non-luminous |
| A piece of rock | Air | A sheet of polythene | A lightened florescent tube | List of transparent objects |
| A sheet of aluminium | Water | Fog | Flame of gas burner | List of translucent objects |
| A CD | A sheet of plane glass | A sheet of cellophane | A lighted torch | List of opaque objects |
| A sheet of carbon paper | smog | Firefly | Moon | |
| Iron | fog | Stove | ||
| An umbrella | a wire mesh | Sun | ||
| 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.
