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Optics and Mirrors, Quizzes of Physics

Physics

Various concepts related to optics and mirrors, including the formation of virtual and real images, the properties of different types of mirrors (concave, convex, and plane), and the behavior of light when it interacts with these mirrors. A series of multiple-choice questions that test the understanding of these concepts, covering topics such as the formation of images, the characteristics of the images produced, and the applications of different types of mirrors. By studying this document, students can gain a deeper understanding of the fundamental principles of optics and the practical applications of mirrors in various contexts.

Typology: Quizzes

2023/2024

Available from 09/19/2024

rajjatt-sabhrwal
rajjatt-sabhrwal 🇮🇳

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Q1. A virtual image:
1. Can be formed on the screen.
2. Cannot be formed on the screen.
3. Is formed only by a plane mirror.
4. Is formed only by the convex mirror.
1 Mark
Ans: 2. Cannot be formed on the screen.
Q2. When an object is placed between the Focus and centre of curvature of concave mirror, then:
1. Real.
2. Inverted.
3. Enlarged.
4. All of the above.
1 Mark
Ans: 4. All of the above.
1 MarkQ3. You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an
inverted image from:
1. Both concave lens and convex lens.
2. Both concave mirror and convex mirror.
3. Both concave mirror and convex lens.
4. Both convex mirror and concave lens
Ans: 3. Both concave mirror and convex lens.
Explanaon:
Oncave mirror and convex lens can only form real and inverted image of an object.
As convex mirror and concave lens always form a virtual and erect image of an object.
Q4. Image formed by a convex mirror is a:
1. Virtual image.
2. Erect.
3. Diminished.
4. All of the above.
1 Mark
Ans: 4. All of the above.
Q5. An erect and enlarged image can be formed by:
1. Only a convex mirror.
2. Only a concave mirror.
3. Only a plane mirror.
4. Both convex and concave mirrors.
1 Mark
Ans: 2. Only a concave mirror.
Explanaon:
An erect and enlarged image can only be formed by a concave mirror and it is virtual in nature.
Q6. Choose the correct opon in quesons?
David is observing his image in a plane mirror. The distance between the mirror and his image is 4m. If he moves
1m towards the mirror, then the distance between David and his image will be.
1. 3m.
2. 5m.
3. 6m.
4. 8m.
1 Mark
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Q1. A virtual image:

  1. Can be formed on the screen.
  2. Cannot be formed on the screen.
  3. Is formed only by a plane mirror.
  4. Is formed only by the convex mirror.

1 Mark

Ans: 2. Cannot be formed on the screen.

Q2. When an object is placed between the Focus and centre of curvature of concave mirror, then:

  1. Real.
  2. Inverted.
  3. Enlarged.
  4. All of the above.

1 Mark

Ans: 4. All of the above.

Q3. You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an 1 Mark inverted image from:

  1. Both concave lens and convex lens.
  2. Both concave mirror and convex mirror.
  3. Both concave mirror and convex lens.
  4. Both convex mirror and concave lens

Ans: 3. Both concave mirror and convex lens. Explanaon: Oncave mirror and convex lens can only form real and inverted image of an object. As convex mirror and concave lens always form a virtual and erect image of an object.

Q4. Image formed by a convex mirror is a:

  1. Virtual image.
  2. Erect.
  3. Diminished.
  4. All of the above.

1 Mark

Ans: 4. All of the above.

Q5. An erect and enlarged image can be formed by:

  1. Only a convex mirror.
  2. Only a concave mirror.
  3. Only a plane mirror.
  4. Both convex and concave mirrors.

1 Mark

Ans: 2. Only a concave mirror. Explanaon: An erect and enlarged image can only be formed by a concave mirror and it is virtual in nature.

Q6. Choose the correct opon in quesons? David is observing his image in a plane mirror. The distance between the mirror and his image is 4m. If he moves 1m towards the mirror, then the distance between David and his image will be.

  1. 3m.
  2. 5m.
  3. 6m.
  4. 8m.

1 Mark

Ans: 3. 6m. Explanaon: In the case of a plane mirror, the distance between the object and the mirror (d1) is same as the distance between the image and the mirror (d2).

Given, Distance between the mirror and David’s image, d2 = 4m Therefore, d1 = d2 = 4m If David moves 1m towards the mirror, then d1 = 4 - 1 = 3m Again, d1 = d2 = 3m Therefore, the distance between David and his image is d1 + d2 = 3 + 3 = 6m.

Q7. The light that is reflected from a compact disc (CD) consists of:

  1. Seven colours.
  2. Eight colours.
  3. Five colours.
  4. Three colours.

1 Mark

Ans: 1. Seven colours.

Q8. Change in the path of light aer striking a mirror is called:

  1. Reflecon of light.
  2. Reclinear propagaon of light.
  3. Lateral inversion.
  4. Dispersion.

1 Mark

Ans: 1. Reflecon of light.

Q9. A rainbow can be seen in the sky:

  1. When the sun is in front of you.
  2. When the sun is behind you.
  3. When the sun is overhead.
  4. Only at the me of sun rise.

1 Mark

Ans: 2. When the sun is behind you. Explanaon: A rainbow can only be seen in the sky when the sun is behind you in rainy season.

Q10. The image formed by a plane mirror is:

  1. The same size as that of the object.
  2. Le-right inversed.
  3. Erect and virtual.
  4. All of the above.

1 Mark

Ans: 4. All of the above.

Q11. The colour of light which is deviated the least by prism in the spectrum of white light is:

  1. Violet.
  2. Green.
  3. Yellow.
  4. Red.

1 Mark

Ans: 1. Violet. Explanaon: Since, red colour has the greatest wavelength, that’s why, it is deviated the least in the spectrum of white light.

Q12. If an object is placed at a distance of 0.5m in front of a plane mirror, the distance between the object and the image formed by the mirror will be:

  1. 2m

1 Mark

  1. Plane mirror and concave mirror.
  2. Concave mirror and convex mirror.
  3. Plane mirror and convex mirror.
  4. Convex mirror and plane mirror.

Ans: 3. Plane mirror and convex mirror. Explanaon: As in case of plane mirror, image formed is virtual, erect and of same size and in case of convex mirror, image is virtual, erect and smaller in size.

Q20. Type of mirror that is used as a rear view mirror in case of vehicles is:

  1. Concave mirror.
  2. Convex mirror.
  3. Plane mirror.
  4. None of these.

1 Mark

Ans: 2. Convex mirror.

Q21. You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object, you can use either:

  1. Concave mirror or convex mirror.
  2. Concave mirror or convex lens.
  3. Concave mirror or concave lens.
  4. Concave lens or convex lens.

1 Mark

Ans: 2. Concave mirror or convex lens.

Q22. Which of the following always diverge light rays?

  1. Convex mirror and plane mirror.
  2. Concave lens and convex mirror.
  3. Concave mirror and convex lens.
  4. Concave lens and convex mirror.

1 Mark

Ans: 2. Concave lens and convex mirror.

Q23. Which of the following can be used to form a real image?

  1. Only concave mirror.
  2. Only plane mirror.
  3. Only convex mirror.
  4. Both concave and convex mirrors.

1 Mark

Ans: 1. Only concave mirror.

Q24. Choose the correct opon in quesons? A virtual image larger than the object can be produced by a:

  1. Concave lens.
  2. Concave mirror.
  3. Convex mirror.
  4. Plane mirror.

1 Mark

Ans: 2. Concave mirror. Explanaon: Concave mirror can form virtual and magnified image of the object. Concave lens and convex mirror forms virtual but diminished image of the object. Plane mirror forms virtual and same size image of the object.

Q25. Choose the correct opon in quesons? The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be.

  1. 1m/s.
  2. 2m/s.
  3. 4m/s.

1 Mark

  1. 8m/s.

Ans: 3. 4m/s. Explanaon: The speed of the car is 2m/s which means the car is approaching the truck with a speed of 2m per second. The distance between the car and truck will decrease at a double rate. This is because the image of the truck will travel a distance twice the distance travelled by the car in equal me. Hence, the image of the truck will appear to approach the driver with the speed of 2 × 2 = 4m/s.

Q26. An image formed by a lens is erect. Such an image could be formed by a:

  1. Convex lens provided the image is smaller than object.
  2. Concave lens provided the image is smaller than object.
  3. Concave lens provided the image is larger than object.
  4. Concave lens provided the image is of the same size.

1 Mark

Ans: 2. Concave lens provided the image is smaller than object. Explanaon: A concave lens can only form virtual, erect and diminished image of an object. As virtual and erect image formed by a convex lens is always magnified.

Q27. My image is erect and is of the same size. What type of mirror I am looking at?

  1. Concave mirror.
  2. Convex Mirror.
  3. Plane Mirror.
  4. All of these.

1 Mark

Ans: 3. Plane Mirror.

Q28. Which of the following would you prefer to use while reading small leers found in a diconary?

  1. A convex lens.
  2. A convex mirror.
  3. A concave lens.
  4. Either (a) or (b).

1 Mark

Ans: 1. A convex lens.

Q29. You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either:

  1. Concave mirror or convex mirror.
  2. Concave mirror or convex lens.
  3. Concave mirror or concave lens.
  4. Concave lens or convex lens.

1 Mark

Ans: 2. Concave mirror or convex lens. Explanaon: Concave mirror and convex lens can only form enlarged image of an object. As convex mirror and concave lens always form a diminished image of an object.

Q30. The object in which seven colours spread over it appears to be white in colour when rotated is Called:

  1. Galileo's disc.
  2. Newton's disc.
  3. Rutherford's disc.
  4. Faraday's disc.

1 Mark

Ans: 2. Newton's disc.

Q31. Spling of white light into seven colours is called:

  1. Reflecon of light.
  2. Reclinear propagaon of light.
  3. Lateral inversion.
  4. Dispersion.

1 Mark

Ans: 4. Dispersion.