CBSE Questions for Class 7 Physics Light Quiz 1 - MCQExams.com

Choose the wrong statement related to a virtual image.
  • Virtual images are always produced by plane mirrors 
  • Virtual images are always erect
  • Virtual image can be obtained on the screen
  • Both A and B
An ideal mirror :
  • Absorbs all the amount of light incident on it
  • Refracts all the light
  • Reflects all the light
  • None of the above
A plane mirror gives a real image when the incident beam is:
  • Wide
  • Narrow
  • Convergent
  • Divergent
Which of the following forms a virtual and erect image for all positions of the object?
  • Convex lens
  • Plane mirror
  • Convex mirror
  • Concave mirror
Which of the following is not the case with image formed by a plane mirror:
  • It is erect
  • It is virtual
  • It is diminished
  • It is at the same distance as the object
How many colours comprises white light?
  • infinite
  • seven
  • three
  • fourteen
The term reflection refers to the bending of light rays:
  • when they strike a mirror
  • when they enter a different medium
  • around a sharp edge
  • around the boundary of a narrow aperture
Reflection is the ........ of light off a surface.
  • Bouncing
  • hitting
  • firing 
  • all
Convex lens is always :
  • tapering at edges
  • thicker in middle
  • converges rays at a point
  • all of the above
In the case of plane mirror. from the mirror:
 distance of the image $$=$$ distance of the ........
  • Second image
  • object
  • both
  • none
Nature of the image formed by a plane mirror is :
  • virtual and erect
  • of the same size as the object
  • laterally inverted
  • all of these
Which of the following best describes image formation by a plane mirror? 
  • A real image is formed in front of the mirror
  • A real image is formed behind the mirror
  • A virtual image is formed in front of the mirror
  • A virtual image is formed behind the mirror
Which of the following sources of light is different from others ?
  • Sunlight
  • White light
  • Light from a bulb
  • Sodium light
An object is kept at $$60$$cm in front of a plane mirror. If the mirror is now moved $$25$$cm away from the object, how is the image shifted from its previous position?
  • $$25$$ cm away
  • $$25$$ cm towards
  • $$50$$ cm away
  • $$50$$ cm towards
State whether true or false:
A concave lens, if kept at a proper distance from an object, can form its real image.
  • True
  • False
In our houses, we use a _____________ to look at ourselves.
  • Convex mirror
  • Concave mirror
  • Convex lens
  • Plane mirror
The E.N.T. (Ear, Nose, Throat) doctor uses a :
  • Convex mirror
  • Convex lens
  • Plane mirror
  • Concave mirror
Fill in the blank:

A _____ image is one which can be obtained on a screen.
  • virtual
  • real
  • imaginary
  • None
The image formed by a plane mirror is :
  • At the same distance behind the mirror as the object is in front of it
  • Laterally inverted
  • Same size as that of the object
  • All of the above
Image formed by a plane mirror is 
  • virtual, behind the mirror and enlarged
  • virtual, behind the mirror and of the same size as the object
  • real at the surface of the mirror and enlarged
  • real, behind the mirror and of the same size as the object.
What type of image is formed by a plane mirror ?
  • Upright
  • Magnified
  • inverted
  • all of these
A virtual image is always erect. 
  • True
  • False
The phenomenon that leads to the bouncing back of light rays is called-
  • Diffraction
  • Reflection
  • Dispersion
  • Refraction
The image of our face in a plane mirror is
  • real
  • magnified
  • diminished
  • Same as the size of the object
The light reflected by a plane mirror may form a real image .......... .
  • If the rays incident on the mirror are converging
  • If the object is placed very close to the mirror
  • If the rays incident on the mirror are diverging
  • Under no circumstances
A virtual image formed by a plane mirror is -
  • Diminished
  • Inverted
  • Erect
  • Enlarged
If we want to see our full image, then the minimum size of the plane mirror :
  • should be twice of our height
  • should be of our height
  • should be half of our height
  • depends upon our distance from mirror
Which mirror is used in movie projectors?
  • Convex mirror
  • Concave mirror
  • Plane mirror
  • Parabolic mirror
In case of plane mirror, the size of the image is equal to the size of the object, irrespective of the distance of the object from the mirror.
  • True
  • False
The image of a real object in a plane mirror is always:
  • Virtual
  • Erect
  • Laterally inverted with respect to the object
  • All of these
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