Light – Reflection and Spherical Mirrors Quiz - ICSE Class 9 Physics

Free practice quiz: Light – Reflection and Spherical Mirrors (ICSE Class 9 Physics). 39 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 9 Physics practice quiz has 39 multiple-choice questions on Light – Reflection and Spherical Mirrors, and 39 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. An object is placed at 2F from a convex mirror. What is the nature and position of the image formed?

   1. Virtual, erect, diminished, at F/2
   2. Virtual, erect, diminished, between P and F
   3. Real, inverted, diminished, at F/2
   4. Virtual, erect, magnified, at 2F
   Show answer

   Answer: B. Virtual, erect, diminished, between P and F

   For a convex mirror, the image is always virtual, erect, and diminished, regardless of the object's position. When the object is placed at 2F (which is beyond the center of curvature in a convex mirror's context, or simply a significant distance away), the image forms between the pole (P) and the focal point (F), and it is diminished.

2. For a convex mirror, the image is always:

   1. real and inverted
   2. virtual and inverted
   3. virtual and erect
   4. real and erect
   Show answer

   Answer: C. virtual and erect

   Convex mirrors are diverging mirrors. They always form images that are virtual (behind the mirror), erect (upright), and diminished (smaller than the object), irrespective of the object's position.

3. Which type of spherical mirror is used as a rearview mirror in vehicles?

   1. Concave mirror
   2. Convex mirror
   3. Plane mirror
   4. Parabolic mirror
   Show answer

   Answer: B. Convex mirror

   Convex mirrors are used as rearview mirrors because they provide a wider field of view. They always form virtual, erect, and diminished images, allowing the driver to see a larger area of the road behind the vehicle.

4. Which of the following statements correctly describes the image formed by a concave mirror when the object is placed between the center of curvature and infinity?

   1. Real, inverted, and magnified
   2. Virtual, erect, and magnified
   3. Real, inverted, and diminished
   4. Virtual, erect, and diminished
   Show answer

   Answer: C. Real, inverted, and diminished

   When an object is placed between the center of curvature (2F) and infinity for a concave mirror, the image formed is real, inverted, and diminished. The image is located between the principal focus (F) and the center of curvature (2F).

5. A ray of light incident normally on a spherical mirror is:

   1. reflected back along the same path
   2. refracted at 90 degrees
   3. reflected parallel to the principal axis
   4. reflected at the same angle of incidence with the principal axis
   Show answer

   Answer: A. reflected back along the same path

   When a ray of light is incident normally on a spherical mirror (i.e., along the radius of curvature or along the principal axis), it strikes the mirror at a 90-degree angle to the tangent at that point. The normal at the point of incidence is the line joining the center of curvature to that point. Therefore, the angle of incidence is 0 degrees with the normal, and by the law of reflection, the angle of reflection is also 0 degrees, meaning the ray retraces its path.

More questions in this quiz

Answers and explanations are in the full quiz.

1. A ray of light parallel to the principal axis of a concave mirror strikes it at a point P. After reflection, the ray will:
2. A concave mirror forms a real, inverted image of the same size as the object. Where is the object placed?
3. The magnification produced by a concave mirror is +3. This means the image is:
4. An object is placed at infinity in front of a concave mirror. The image formed will be:
5. What is the relationship between the radius of curvature (R) and the focal length (f) of a spherical mirror?
6. A ray of light incident on a spherical mirror grazes the principal axis at point A. After reflection, the ray will:
7. If an object is placed at the center of curvature of a concave mirror, the image formed is:
8. A ray of light passing through the center of curvature of a concave mirror, after reflection, will:
9. Which mirror is used as a shaving mirror?
10. Which phenomenon is responsible for the formation of images by spherical mirrors?
11. An object is placed at the principal focus of a concave mirror. The image will be formed:
12. If the magnification is +0.5 for a spherical mirror, the image is:
13. The size of the image formed by a concave mirror when the object is placed between P and F is:
14. The mirror formula is given by:
15. When the object distance from a concave mirror is greater than twice its focal length (u > 2f), the image formed is:
16. An object is placed at a distance 'u' from a concave mirror of focal length 'f'. If the image formed is real and inverted, what is the range of 'u' for the image to be diminished?
17. The magnification of a convex mirror is always:
18. A ray of light is incident on a concave mirror such that it passes through the focal point. The reflected ray will be:
19. If an object is placed at a distance of 40 cm from a concave mirror, and the image is formed at 10 cm from the mirror, and both are on the same side. What is the focal length of the mirror?
20. A ray of light is incident on a convex mirror. If the ray, after reflection, appears to come from the focal point, then the incident ray must have been:
21. The focal length of a convex mirror is 30 cm. An object is placed at 60 cm from the mirror. What is the position of the image?
22. Which of the following is an example of a real image?
23. An object is placed at infinity in front of a convex mirror. The image formed will be:
24. If a concave mirror has a focal length of -15 cm, and an object is placed 20 cm in front of it. The image will be formed at:
25. What is the nature of the image formed by a plane mirror?
26. When an object is placed between the focal point and the center of curvature of a concave mirror, the image formed is:
27. If the magnification of a spherical mirror is +2, what can you conclude about the image?
28. For a concave mirror, if the object distance (u) is equal to the focal length (f), the image is formed at:
29. Which statement correctly describes the relationship between the focal length (f) and the radius of curvature (R) for a spherical mirror?
30. If an object is placed at twice the focal length (2f) from a concave mirror, the image formed is:
31. The magnification produced by a convex mirror is always positive and:
32. A ray of light passes through the center of curvature of a concave mirror. After reflection, it:
33. What is the focal length of a convex mirror whose radius of curvature is 40 cm?
34. Which of the following is a diverging mirror?

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