CBSE Questions for Class 7 Physics Light Quiz 8 - MCQExams.com

Complete the ray diagram.
456164_31c9580983f5437ba602a94885dc71db.png
  • None
What is the value of $$A$$?
456175_ae8dc49386034e7da460c927f41b5b81.png
  • $$2\ m$$
  • $$5\ m$$
  • $$16\ m$$
  • $$12\ m$$
Telescope forms
  • Real Image
  • Virtual Image
  • Both A and B
  • Neither A nor B
Fill in the blank:

________ mirrors are used in roads and driveway.
  • Concave
  • Convex
  • Plane
  • No
Find the odd one out:
  • Shaving mirror
  • Dentist mirror
  • Headlight of car
  • Camera
A virtual image occurs when light rays appear to converge. One example of the formation of a virtual image is 
  • placing an object at the centre of curvature of a concave mirror
  • placing an object in between the pole and the focus of a concave mirror
  • Both A and B
  • Neither A nor B
When is the virtual image formed?
  • when the rays of light after reflection or refraction appear to meet at a point
  • when the rays of light after reflection or refraction meet at a point
  • when the rays of light after deflection appear to meet at a point
  • when the lens rays after reflection or refraction meet at a point
A persons image appears on the far side of an optical instrument, upside down. What is the optical instrument? 
492638_646cdf52c3c7494b9b50b4321994cbbb.png
  • Concave mirror
  • Convex mirror
  • Plane mirror
  • Concave lens
  • Convex lens
A person standing at $$3 m$$ distance from a plane flat mirror would see their image at a distance of:
  • $$0.75 m$$
  • $$1.5 m$$
  • $$2.25 m$$
  • $$3 m$$
  • $$6 m$$
The discovery of Newton's colour disc proves which of the following statement?
  • Light is colourless
  • Light is not colourless
  • Light has only 1 colour
  • Light has only 3 basic colours
In case of concave lens the image can form on the side opposite to the object.
  • True
  • False
A candle is placed in front of an optical instrument, and an image is obtained as erect, virtual, and reversed from left to right. Identify the device that would produce the types of images described above.
  • Concave mirror
  • Convex mirror
  • Concave lens
  • Convex lens
  • Flat mirror
Distance between an object and plane mirror is 100cm. Find the distance between the object and its image.
  • $$50 cm$$
  • $$100 cm$$
  • $$200 cm$$
  • $$300 cm$$
  • $$400 cm$$
Where should the object be placed to get the virtual image in case of convex lens?
  • Object should be placed between F and 2F
  • Object should be placed between F and O
  • Object should be placed beyond 2F
  • Object should be placed at O
Mirrors on the outside of the passenger side of the cars often contain a message that says something like. "Objects are closer than they appear." In the other words, the images seen in the mirror, although looking like the objects in other respects, appear to be further away than they actually are, because the images are the smaller than the objects.
What kind of mirror is being used in this case? 
  • plane mirror
  • convex mirror
  • concave mirror
  • The mirror could be concave or convex.
  • The mirror could be flat or concave.
Where should the object be placed if we use convex lens to obtain real, inverted and diminished image?
  • Object should be placed at focal point
  • Object should be placed at finite distance from Focal point
  • Object should be placed at infinity
  • Object should be placed between F and 2F
In case of image formation by plane mirrors.
  • Object can be real and image virtual
  • Object can be virtual and image real
  • Both object and image can be real
  • Both object and image can be virtual
An object O is placed in front of a mirror. Which is possible position of the image?
512311_95e92652130c4bf395f3235490e2df4f.PNG
  • A
  • B
  • C
  • D
In case of reflection by a plane mirror, which of the following statements are not correct?
  • It can never give real image
  • It can never give inverted image
  • It changes left into right
  • It changes front into back
The words UNIFIED are flashed infront of mirror. Which set of alphabets on laterally inversion seem to appear differently?
  • UIFD
  • NFED
  • FIED
  • UIFE
Which objects use the reflection of light?
  • Side mirror of a car
  • Periscope
  • Mirror
  • All of the above
Two mirrors(facing each other) and an object O are placed in the grid as shown. At which positions(s) can the virtual image of object O be formed?
512315_70888a8a21b34c48949cdbfe5b6093d3.png
  • A
  • B
  • C
  • D
Incident ray is the ray of light striking a surface.
  • True
  • False
Light travels in a straight line.
  • True
  • False
For a concave mirror, whenever the distance of the object is less than the focal length, the image is virtual. That is called virtual image, because
  • the image is formed behind the mirror
  • the image is not inverted
  • the image cannot be obtained on screen
  • the image can be located by virtue of parallax
Why is a Converging lens so called ?
  • The rays of light passing through it meet at a point.
  • The rays of light passing through it pass without any deviation.
  • The rays of light passing through it move away from each other.
  • None of these
Consider the following statements :
A real image
can be formed on a screen.
is always magnified and inverted.
Which of the statements given above is/are correct?
  • Only $$1$$
  • Only $$2$$
  • Both $$1$$ and $$2$$
  • Neither $$1$$ nor $$2$$
The headlights of a car have reflectors behind the bulb. What is the function of those reflectors?
  • To concentrate the light rays into a beam
  • To show the magical effect of mirrors
  • To dissipate the heat energy generated by the bulb
  • None of these
Choose the alternative which closely resembles the mirror image of the given combination.
635911_05b773ef1079401b92d09a800b8f2c40.png
  • 1
  • 2
  • 3
  • 4
Choose the correct mirror image for the word SHARE
635920_de9ec265be0048598271f49da7e41b04.png
  • A
  • B
  • C
  • D
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