Physics

Light and Mirrors

458 Questions

Light and mirrors questions cover the principles of reflection, image formation, and mirror magnification. Concepts include the properties of plane mirrors, the uses of concave mirrors in solar devices, and the behavior of light rays. These fundamentals are essential general science topics in major competitive examinations.

Plane mirror propertiesConcave mirror applicationsMirror magnification formulaLight reflection lawsImage formation

Light and Mirrors Questions

Multiple choice

Which of the following is called concave mirror?

  1. A spherical mirror whose inner hollow surface is the reflecting surface

  2. A spherical mirror whose outer bulging surface is the reflecting surface

  3. b & c both

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A concave mirror is a spherical mirror where the inner, hollowed-out surface acts as the reflecting surface. The outer surface is typically silvered or opaque.

Multiple choice

Which of the following is called centre of curvature?

  1. The centre of a spherical mirror

  2. The centre of a hollow sphere of glass of which the spherical mirror is a part

  3. The portion of a mirror from which the reflection of light actually takes place

  4. The point on the principal axis where all the rays coming from infinity (parallel rays) after reflection either meet or appear to meet
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The centre of curvature of a spherical mirror is defined as the center of the hollow sphere of glass from which the mirror was originally cut.

Multiple choice

Which of the following is called aperture of the mirror?

  1. The centre of a spherical mirror

  2. The centre of a hollow sphere of glass of which the spherical mirror is a part

  3. The portion of a mirror from which the reflection of light actually takes place

  4. The point on the principal axis where all the rays coming from infinity (parallel rays) after reflection either meet or appear to meet
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The aperture of a mirror refers to the effective diameter or the portion of the mirror's surface that is actually available to reflect light.

Multiple choice

Which of the following is called convex mirror?

  1. A spherical mirror whose inner hollow surface is the reflecting surface

  2. A spherical mirror whose outer bulging surface is the reflecting surface

  3. b & c both

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A convex mirror is a spherical mirror where the outer, bulging surface acts as the reflecting surface, causing light to diverge.

Multiple choice

What are mirrors?

  1. shiny reflecting surfaces

  2. dark patches

  3. smooth absorbing surfaces

  4. rough and non reflecting surfaces
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mirror is a glass whose one side is being painted so that it acts as a shiny reflecting surface and forms images. If its painted surface is not even and smooth throughout, it forms disturbed images. It is a reflecting  surface, not an absorbing surface.

Multiple choice

Which one is not the property of mirror?

  1. Absorption

  2. Reflection

  3. Smooth

  4. Shiny
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mirror is glass whose one side is painted so that it acts as a shiny reflecting surface and forms images. If its painted surface is not even and smooth throughout, it forms disturbed images. So it is a reflecting  surface and not an absorbing one.

Multiple choice

A rear view mirror for driving is

  1. plain

  2. concave

  3. convex

  4. none
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Convex mirrors are used as rear-view mirrors in vehicles because they provide a wider field of view and form erect, diminished images.

Multiple choice

What kind of mirror is used for rear view?

  1. Concave mirror

  2. Convex mirror

  3. Plain mirror

  4. Simple mirror
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Convex mirrors provide a wider field of view compared to plane or concave mirrors, allowing drivers to see more of the road behind them. They produce virtual, diminished, and erect images.

Multiple choice

Directions: Four parts of the sentences given below have been underlined. Identify the part having an error. If no part has an error, mark (E).

A mirage is an (A) atmospheric optical illusion (B) in what an observer sees a nonexistent body of water (C) or an image of some (D) object. (E) No error

  1. (A)

  2. (B)

  3. (C)

  4. (D)

  5. (E)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The phrase 'in what' is incorrect here. The correct relative pronoun to refer to the 'illusion' is 'in which'.