CBSE Questions for Class 6 Physics Light Shadows And Reflections Quiz 4 - MCQExams.com

Select the odd one out w.r.t. transparency (wood, stone, cement, glass)
  • glass
  • wood
  • stone
  • cement
State whether true or false.
A dark patch formed behind an opaque body when the opaque body is placed in the path of a light beam is called an image.
  • True
  • False
Butter paper is an example for __________ object.
  • A transparent
  • A translucent
  • An opaque
  • A luminous
Shadow formation is an example of :
  • rectilinear propagation of light
  • curvilinear propagation of light
  • dispersion of light 
  • none of these
State whether true or false:
You can clearly see through a blue-tinted drinking glass.
  • True
  • False
Which objects use the reflection of light?
  • Side mirror of a car
  • Periscope
  • Mirror
  • All of the above
Incident ray is the ray of light striking a surface.
  • True
  • False
Incident light falling on a surface is sent back into the same medium. This phenomenon is known as
  • Dispersion
  • Reflection
  • Refraction
  • Polarization
Three sticks are placed in an open field as shown in figure. Which of the following sticks will form the shadow of equal length? 
809807_3b6931f0c1d244ffa9c50b766d9c55dc.JPG
  • Only sticks (I) and (II)
  • Only sticks (II) and (III)
  • Only sticks (I) and (III)
  • All sticks (I), (II) and (III).
You have to cast the shadow of your pencil on the wall with the help of candle in a dark room. How can you obtain a shadow smaller in size than the pencil?
[You cannot use mirrors or lenses and assume the candle to be a point source of light]
  • Keep the pencil close to the wall
  • Bring the pencil closer to the candle
  • Keep the pencil midway between the candle and the wall
  • You cannot obtain a shadow smaller than the size of the pencil
The pinhole camera works on the principle of
  • Reflection of light.
  • Refraction of light.
  • Rectilinear propagation of light.
  • Both A and B.
The given image shows the working of which optical instrument ?
635937_ce953900a674475982367ea7cd82d510.jpg
  • Telescope
  • Microscope
  • Pinhole Camera
  • Periscope
Geeta placed three objects made of different materials as shown in the figure. She observed a bright spot of light at (II) but (III) would not get any spot. Then,
809813_7100952d1bd34fc1b68411a81d88c3a8.png
  • (I) and (ll) are made of transparent materials and (III) is made of opaque material.
  • (I) is made of transparent material, (II) is made of translucent material and (III) is made of opaque material.
  • (I) is made of transparent material, (II) is made of opaque material and (III) is made of either transparent or opaque or translucent material.
  • (I) and (II) are made of opaque material and (III) is made of transparent material.
The color of the shadow of Green ball is:
  • Red
  • Black
  • Blue
  • Green
Read the given statements and select the correct option.
Statement 1: Rahul placed a colored plastic bottle in front of the beam of a torchlight. Then he placed a transparent sheet of the same size on the other side of the bottle. No shadow will form on the screen.
Statement 2: Translucent objects allow light to pass through them partially.
  • Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1
  • Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1
  • Statement 1 is true but statement 2 is false
  • Statement 1 is false but statement 2 is true
Which diagram best shows the reflection of light?
In the pinhole camera, the light rays from the source are moving through the pinhole and incident on the white screen. This is due to :
  • the property of light called "rectilinear propagation of light"
  • the property of light called "interference of light"
  • the property of light called "diffraction"
  • the property of light called "dispersion"
The reflection that occurs when a beam of light falls on a smooth surface is called irregular reflection.
  • True
  • False
When Abhishek looked at a lighted torch through an object he could see a faint glow, but not the torch. The object is
  • Transparent
  • Opaque
  • Translucent
  • None of these
Which surface will  reflect most of the light falling on them ?
  • Rough surface
  • Shining surface
  • Smooth surface
  • Opaque surface
Which of the following is a translucent object? 
  • Glass
  • Water
  • Butter paper
  • Iron sheet
Which of the following can never form a circular shadow?
  • A ball
  • A flat disc
  • A shoe box
  • An ice cream cone
The phenomenon related to the reflection of light is 
  • Image of the sun visible on the surface of water
  • Reddish colour of the sky during evening
  • Sun is visible two minutes before the actual sun rise.
  • Green house effect caused by the radiation of the sun
Which stick is likely to form the $$SHORTEST$$ shadow on the ground?
1406871_a19a0baaa42c4165b2039df3c2ff6f7d.png
  • $$A$$
  • $$B$$
  • $$C$$
  • $$D$$
A student observes a tree given in Fig. through a pinhole camera. Which of the diagrams given in Fig. (a) to (d) depicts the image seen by her correctly?
1788187_46300cb9a64f4f93979dd8f867775a47.png
Which of the following is/are not always necessary to observe a shadow?
  • Sun
  • Screen
  • Source of light
  • Opaque object
Write true or false for statement

Light passes through glass.
  • True
  • False
If we are able to see anything clearly through an object, then such an object is said to be a ________ object
  • Transparent
  • Translucent
  • Opaque
  • None of these
Study the set-up below. How will the shadow look like?
809799_693eee768bdf4ba9842c9ffd1293c448.JPG
A man of height h walking away from a lamp post finds his shadow to be equal to his height when he is at a distance x from the lamp post. If the height of the lamp post is H, then x is
  • H + h
  • H - h
  • H.h
  • H/h
0:0:1


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