CBSE Questions for Class 7 Physics Light Quiz 10 - MCQExams.com

The image of an object formed on the outer surface of the spoon is _______ and _______.
  • Real and inverted
  • Real and erect
  • Virtual and inverted
  • Virtual and erect
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
A thick plane mirror shows a number of images of the filament of an electric bulb. Of these, the brightest image is the:
1509226_8f55c0204c4d467597446c15f9ad6e5a.png
  • First
  • Second
  • Last
  • Fourth
A hairdresser stands with her nose $$20\ cm$$ in front of a plane mirror. For what distance must she focus her eyes in order to see her nose in the mirror?
  • $$40\ cm$$
  • $$50\ cm$$ 
  • $$30\ cm$$ 
  • $$60\ cm$$ 
A man of height $$1.8$$m stands infront of a large vertical plane mirror. The distance of the image from the man if he stands at a distance of $$1.5$$ m from the mirror is?
  • $$1$$ m
  • $$2$$ m
  • $$3$$ m
  • $$4$$ m
Image formed by convex mirror is?
  • Virtual
  • Real
  • Enlarged
  • Inverted
Which one of the following statements is not true? The phase difference between two light waves can change:
  • By reflection of one of the waves
  • By the waves travelling along paths of different lengths
  • By the waves travelling through media that have a different refractive indices but the same thickness
  • By being transmitted through a boundary between two media with different refraction indices
Images in spherical mirrors suffer from several defects. Some of which is/are:
  • Diffraction effect
  • The magnification varies with the distance of the object from mirror
  • A point source will not produce a point image
  • All of the above
A plane mirror is approaching you at a speed of $$10$$ cm/s you can see your image in it. At what speed will your image approach you?
  • $$10$$ cm/s
  • $$5$$ cm/s
  • $$20$$ cm/s
  • $$15$$ cm/s
Write true or false for the following statements:
A convex mirror always forms a virtual and erect images.
  • True
  • False
Write true or false for the following statement:
In a plane mirror, the distance between image and the mirror is the same as distance between object and the mirror.
  • True
  • False
Write true or false for the following statements:
A virtual, magnified and erect image can be formed by a concave mirror.
  • True
  • False
A plane mirror is placed vertically facing due north. An arrow pointing north-east is kept in front of the mirror. In which direction will the arrow point in this image ?
1772347_19d6154f533d4c0f893d928427027801.jpg
  • north-east
  • south-east
  • south-west
  • north-west
Write true or false for the following statements:
If an object is placed in between two plane mirrors inclined at and angle $$45^\circ$$, then the number of image formed will be $$9.$$
  • True
  • False
Write true or false for the following statements :
Light coming from the sun is white light and contains seven colors. 
  • True
  • False
Image formed by a convex spherical mirror is:
  • virtual
  • real
  • enlarged
  • inverted
A plane mirror can be used to form a real image equal in size as of the object.
  • True
  • False
Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively.
  • Plane mirror and concave mirror.
  • Concave mirror and convex mirror.
  • Plane mirror and convex mirror.
  • Convex mirror and plane mirror.
Four students $$A, B, C$$ and $$D$$ looked through pipes of different shapes to see a candle flame as shown in Fig.
Who will be able to see the candle flame clearly?
1788188_bf9d029b81b140f69f1de624b46397b7.png
  • $$A$$
  • $$B$$
  • $$C$$
  • $$D$$
Which of the following can be used to form a real image?
  • Concave mirror only.
  • Plane mirror only.
  • Convex mirror only.
  • Both concave and convex mirrors.
Write true or false for each statement:
The image formed by a plane mirror can be obtained on a screen.
  • True
  • False
Write true or false for each statement:
The image of the right hand in a plane mirror looks like that of a left hand. 
  • True
  • False
Write true or false for each statement:
The image formed by a plane mirror is real.
  • True
  • False
Write true or false for each statement:
The image formed by a plane mirror is upright.
  • True
  • False
The image formed by a plane mirror is:
  • Virtual and inverted
  • Virtual and erect
  • Real and Inverted
  • Real and erect
A convex mirror is used 
  • as a shaving mirror
  • as a head by a dentist.
  • as a rear view mirror by a driver
  • as a reflector in torch.
Write true or false for each statement 
Image is formed by a mirror due to refraction of light 
  • True
  • False
Focal length of plane mirror is
  • at infinity
  • zero
  • negative
  • none of these
The focal length of a mirror is +60 cm. Which kind of mirror it is? 
  • Concave mirror
  • Parabolic mirror
  • Plain mirror
  • Convex mirror
Which of the following mirrors has a wide field of view?
  • Plane mirror
  • Convex mirror
  • Concave mirror
  • Parabolic mirror
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