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Light Shadows and Reflection Class 6 MCQs Questions with Answers
Choose the correct option.
Question 1.
Which one of the following is the natural source of light?
(a) Electric bulb
(b) Sun
(c) Tube light
(d) Moon
Answer
Answer: (b) Sun
Question 2.
The object which does not have light of its own is
(a) shining mirror
(b) light bulb
(c) star
(d) lighted match box
Answer
Answer: (a) shining mirror
Question 3.
Stars are
(a) luminous
(b) non-luminous
(c) both of these
(d) none of these
Answer
Answer: (a) luminous
Question 4.
A torch is a
(a) luminous
(b) non-luminous
(c) both of these
(d) none of these
Answer
Answer: (a) luminous
Question 5.
Which of the following is a non-luminous object?
(a) Torch
(b) Sun
(c) Electric light
(d) Chair
Answer
Answer: (d) Chair
Question 6.
Objects that do not give out or emit light of their own are called
(a) luminous
(b) non-luminous
(c) opaque
(d) translucent
Answer
Answer: (b) non-luminous
Question 7.
Which of the following is a luminous object?
(a) Pencil
(b) Chair
(c) Sun
(d) Table
Answer
Answer: (c) Sun
Question 8.
The objects which allow light to pass through them are called
(a) transparent
(b) opaque
(c) translucent
(d) none of these
Answer
Answer: (a) transparent
Question 9.
Air is
(a) transparent
(b) translucent
(c) both of these
(d) none of these
Answer
Answer: (a) transparent
Question 10.
Glass sheet is a/an
(a) transparent object
(b) opaque object
(c) transparent object
(d) none of these
Answer
Answer: (c) translucent
Question 11.
Substances through which light can pass partially and things cannot be seen clearly through them are
(a) transparent
(b) opaque
(c) translucent
(d) none of these
Answer
Answer: (c) translucent
Question 12.
Which of the following are transparent or allows light to pass through it?
(a) Rubber
(b) Glass
(c) Copper
(d) Wood
Answer
Answer: (b) Glass
Question 13.
Solid wax is
(a) transparent
(b) translucent
(c) opaque
(d) none of these
Answer
Answer: (c) opaque
Question 14.
Objects which does not allow light to pass through them are called
(a) opaque objects
(b) transparent objects
(c) translucent objects
(d) none of these
Answer
Answer: (a) opaque objects
Question 15.
A mirror is an example of
(a) transparent object
(b) opaque object
(c) translucent
(d) none of these
Answer
Answer: (b) opaque object
Question 16.
Which is an example of a translucent object?
(a) A thin glass sheet
(b) A thin paper sheet
(c) A thin iron sheet
(d) A thin wooden sheet
Answer
Answer: (b) opaque object
Question 17.
Light travels in
(a) a curved line
(b) a random way
(c) a straight line
(d) a zig-zag line
Answer
Answer: (c) a straight line
Question 18.
Which types of objects do not allow light to pass through them?
(a) Transparent
(b) Translucent
(c) Opaque
(d) None of these
Answer
Answer: (c) Opaque
Question 19.
When an opaque object comes in the way of light it makes
(a) a shadow
(b) a coloured image
(c) a black and white image
(d) no image
Answer
Answer: (a) a shadow
Question 20.
The image formed in water is
(a) inverted
(b) erect
(c) long
(d) diminished
Answer
Answer: (b) erect
Question 21.
The shape of shadow depends upon the
(a) shape of the object
(b) size of the object
(c) size of source of light
(d) colour of the source light
Answer
Answer: (a) shape of the object
Question 22.
The position of the shadow changes with
(a) the position of the light source
(b) the movement of the light source
(c) both (a) and (b)
(d) none of these
Answer
Answer: (c) both (a) and (b)
Question 23.
Image formed by plane mirror is
(a) inverted
(b) erect
(c) erect but laterally inverted
(d) none of these
Answer
Answer: (c) erect but laterally inverted
Question 24.
Image formed by a pinhole camera is
(a) erect
(b) inverted
(c) sometimes erect, sometimes inverted
(d) none of these
Answer
Answer: (b) inverted
Question 25.
The pinhole image of the sun is
(a) circular
(b) long
(c) sometimes long sometime circular
(d) none of these
Answer
Answer: (a) circular
Question 26.
Shadow of an object is
(a) dark (black)
(b) blue
(c) red
(d) depends on the colour of object
Answer
Answer: (a) dark (black)
Question 27.
Shadow gives information about
(a) shape of the light source
(b) size of object
(c) surface
(d) shape of object
Answer
Answer: (d) shape of object
Question 28.
The formation of shadow of one celestial body on the other is known as
(a) image
(b) reflection
(c) eclipse
(d) none of these
Answer
Answer: (c) eclipse
Question 29.
The ray of light that falls on a plane mirror is called
(a) reflected ray
(b) incident ray
(c) both (a) and (b)
(d) none of these
Answer
Answer: (b) incident ray
Question 30.
When a light ray returns back after striking the surface of the plane mirror is called
(a) reflected ray
(b) incident ray
(c) both (a) and (b)
(d) none of these
Answer
Answer: (a) reflected ray
Question 31.
Air and water are
(a) transparent objects
(b) translucent objects
(c) opaque objects
(d) none of these
Answer
Answer: (a) transparent objects
Question 32.
Stars are
(a) luminous
(b) non-luminous
(c) both of these
(d) none of these
Answer
Answer: (a) luminous
Question 33.
The material which allows light to pass through it is
(a) copper
(b) wood
(c) rubber
(d) glass
Answer
Answer: (d) glass
Question 34.
Shadow of an object is always
(a) blue
(b) red
(c) white
(d) black
Answer
Answer: (d) black
Question 35.
The object that does not give out light on its own is the
(a) star
(b) lighted match-stick
(c) light bulb
(d) shining mirror
Answer
Answer: (d) shining mirror
Question 36.
Light travels in a
(a) curved line
(b) straight line
(c) circle
(d) none of these
Answer
Answer: (b) straight line
Question 37.
Natural luminous object among the following is
(a) planets
(b) moon
(c) sun
(d) all of these
Answer
Answer: (c) sun
Question 38.
Shadows give us information about the
(a) size of object
(b) shape of object
(c) surface
(d) all of these
Answer
Answer: (b) shape of object
Question 39.
Plywood sheet is a/an
(a) transparent object
(b) translucent object
(c) opaque object
(d) none of these
Answer
Answer: (c) opaque object
Question 40.
The ray of light that falls on a plane mirror is called
(a) reflection
(b) reflected ray
(c) incident ray
(d) beam of ray
Answer
Answer: (c) incident ray
Fill in the Blanks
Question 1.
__________ helps us to see objects.
Answer
Answer: Light
Question 2.
Objects that give out or emit light of their own are called __________ objects.
Answer
Answer: luminous
Question 3.
Objects that do not have light of their own are called __________ objects.
Answer
Answer: non-luminous
Question 4.
Substances which allow light to pass through them are called _________ objects.
Answer
Answer: transparent
Question 5.
The darkness that an object cause when it prevents light to pass through is called _________
Answer
Answer: shadow
Question 6.
Image formed by a plane mirror is _________
Answer
Answer: erect
Question 7.
Image formed by a pinhole camera is _________ down.
Answer
Answer: upside
Question 8.
Light travels in a _________ line.
Answer
Answer: straight
Question 9.
Plastic is opaque but glass is _________
Answer
Answer: transparent
Question 10.
The image formed by a mirror is due to _________ of light.
Answer
Answer: reflection
Question 11.
Shadows are formed when an _________ object comes in the path of light.
Answer
Answer: opaque
Question 12.
The phenomenon due to which light returns back after striking a highly polished surface is called _________ of light.
Answer
Answer: reflection
Question 13.
The working of a pinhole camera is based on the property of _________ propagation of light.
Answer
Answer: rectilinear
Question 14.
A shadow is always __________ while the image shows true colours of the object.
Answer
Answer: black
Question 15.
The size of a shadow is relative to the __________ of source of light with respect to the object.
Answer
Answer: position
Question 16.
In a plane mirror our left hand looks like right hand. This phenomenon is known as _________
Answer
Answer: lateral inversion
Question 17.
We are able to see the things around us due to …………………….
Answer
Answer: light
Question 18.
Butter paper is a ……………………. object.
Answer
Answer: translucent
Question 19.
……………………. objects do not allow light to pass through them.
Answer
Answer: opaque
Question 20.
The position of the shadow changes with the ……………………. of the object.
Answer
Answer: movement
Question 21.
All shadows caused by the sun are made of ……………………. and …………………….
Answer
Answer: umbra, penumbra
Question 22.
In pinhole camera, the image is free from spherical and ……………………. aberrations.
Answer
Answer: chromatic
Question 23.
The glass sheet of plane mirror offers a ……………………. surface.
Answer
Answer: smooth
Question 24.
The image which cannot be projected on to a screen is called ……………………. image.
Answer
Answer: virtual
Question 25.
Cellophane sheet is ……………………. while tracing paper is …………………….
Answer
Answer: transparent, translucent
Question 26.
All the planets and the moon are the ……………………. of light.
Answer
Answer: reflectors
True or False
Question 1.
A mirror reflects a beam of light.
Answer
Answer: True
Question 2.
A blackboard is a luminous object.
Answer
Answer: False
Question 3.
The image formed by a pinhole camera is erect.
Answer
Answer: False
Question 4.
The moon is a non-luminous body.
Answer
Answer: True
Question 5.
Wax paper is a transparent object.
Answer
Answer: False
Question 6.
Torch is a luminous object.
Answer
Answer: True
Question 7.
Black thick paper is translucent.
Answer
Answer: False
Question 8.
The shadow of a coloured object is also coloured.
Answer
Answer: False
Question 9.
Mirror does not change the direction of light that falls on it.
Answer
Answer: False
Question 10.
A shadow is formed when a transparent object comes in the way of light.
Answer
Answer: False
Question 11.
The image formed by a plane mirror is erect but laterally inverted.
Answer
Answer: True
Question 12.
The pinhole image of the sun is rectangular.
Answer
Answer: False
Question 13.
All opaque objects do not cast shadows.
Answer
Answer: False
Question 14.
A firefly is a luminous body.
Answer
Answer: True
Question 15.
The dark patches formed behind an opaque object when it does not allow light to pass through it are called shadows.
Answer
Answer: True
Question 16.
The objects which do not allow light to pass through them are called translucent objects.
Answer
Answer: False
Question 17.
Shadows do not give us any information about the shapes of objects.
Answer
Answer: False
Question 18.
The colour of opaque objects affect the dark colour of the shadow.
Answer
Answer: False
Question 19.
Light travels in a curved line. This property of light is called rectilinear propagation of light.
Answer
Answer: False
Question 20.
The light ray which returns after striking a smooth surface is called incident ray.
Answer
Answer: False
Question 21.
Moon has its own light.
Answer
Answer: False
Question 22.
Air and water are translucent objects.
Answer
Answer: False
Question 23.
Dark patches are produced when light is stopped by opaque objects.
Answer
Answer: True
Question 24.
The formation of shadow shows that light travels in a straight line.
Answer
Answer: True
Question 25.
The part of the shadow which occurs in the centre is called penumbra.
Answer
Answer: False
Question 26.
Sun rays falling on a flying bird form shadow in space.
Answer
Answer: True
Question 27.
Focusing in required in a pinhole camera.
Answer
Answer: False
Question 28.
Pinhole camera is used to study the moving objects also.
Answer
Answer: False
Question 29.
The plane mirror shines due to the silver coating.
Answer
Answer: True
Question 30.
A pinhole camera uses a lens to form a real and inverted image.
Answer
Answer: False
Match the items given in column I suitably with those given in column II.
| Column I | Column II |
| 1. A shadow | (a) Non-luminous |
| 2. A firefly | (b) Dark area of an object |
| 3. The moon | (c) Forms inverted image |
| 4. A pinhole camera | (d) Translucent object |
| 5. Butter paper | (e) Natural source of light |
| 6. Eclipse | (f) Reflection of light |
| 7. A plane mirror | (g) Shadows of celestial bodies |
Answer
Answer:
| Column I | Column II |
| 1. A shadow | (b) Dark area of an object |
| 2. A firefly | (e) Natural source of light |
| 3. The moon | (a) Non-luminous |
| 4. A pinhole camera | (c) Forms inverted image |
| 5. Butter paper | (d) Translucent object |
| 6. Eclipse | (g) Shadows of celestial bodies |
| 7. A plane mirror | (f) Reflection of light |
| Column A | Column B |
| 1. Transparent objects | (a) Butter paper and wax paper |
| 2. Opaque objects | (b) Water and glass |
| 3. Translucent objects | (c) Table and chair |
| 4. Shadow | (d) No focusing |
| 5. Pinhole camera | (e) Dark patch |
Answer
Answer:
| Column A | Column B |
| 1. Transparent objects | (b) Water and glass |
| 2. Opaque objects | (c) Table and chair |
| 3. Translucent objects | (a) Butter paper and wax paper |
| 4. Shadow | (e) Dark patch |
| 5. Pinhole camera | (d) No focusing |
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