Mirror Equation Questions

A mirror is a polished shiny object usually made of glass which reflects most of the rays of light falling upon it.

Mirror equation is

• u is the Object distance
• v is the Image distance
• f is the Focal Length given by f=R/2
• R is the radius of curvature of the spherical mirror

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Important Mirror Equation Questions with Answers

1. What are the various types of mirrors?

The various types of mirrors are the plane mirror, convex mirror, and concave mirror.

2. ______ is a ray of light that hits the surface.

1. Normal ray
2. Reflected ray
3. Incident ray
4. Refracted ray

Answer: c) Incident ray.

Explanation: A ray of light that hits the surface is known as an incident ray.

3. The distance between the pole of the mirror and the object is known as ______.

1. Image distance
2. Object distance
3. Focal Length
4. Focal distance

Answer: b) Object distance

Explanation: Object distance is the distance between the pole of the mirror and the object.

4. Image distance is represented by which letter?

1. i
2. d
3. u
4. v

Answer: d) v

Explanation: Image distance is represented by the letter ‘v’.

5. What is the formula for finding the focal length?

1. f=R+2
2. f=R-2
3. f=2R
4. f=R/2

Answer: d) f=R/2

Explanation: The formula to find the focal length is f=R/2.

6. What is the mirror formula?

1. \(\begin{array}{l}\frac{1}{v}-\frac{1}{u}={f}\end{array} \)
2. \(\begin{array}{l}\frac{1}{v}+\frac{1}{u}={f}\end{array} \)
3. \(\begin{array}{l}\frac{1}{v}+\frac{1}{u}=\frac{1}{f}\end{array} \)
4. \(\begin{array}{l}\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\end{array} \)

Answer: c)

Explanation: The mirror formula is

7. Mirror equation holds good for _____.

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

Answer: c) Concave and convex mirror.

Explanation: Mirror equation holds good for a concave mirror and convex mirror.

8. What are the types of spherical mirrors?

The types of spherical mirrors are concave mirrors and convex mirrors.

9. The angle formed between the normal and the incident ray at the point of incidence is known as ______.

1. Angle of reflection
2. Angle of incidence
3. Angle of refraction
4. Angle of interference

Answer: b) Angle of incidence

Explanation: The angle of incidence is the angle formed between the normal and the incident ray at the point of incidence.

10. The ray that is 90° to the surface or the ray which is perpendicular to the reflecting surface is called ______.

1. Normal ray
2. Reflected ray
3. Incident ray
4. Refracted ray

Answer: a) Normal ray

Explanation: Normal ray is the ray that is 90° to the surface or the ray which is perpendicular to the reflecting surface.

Practice Questions

1. What is a mirror equation?
2. Explain the mirror equation.
3. What is a convex mirror?
4. Define refracted ray.
5. What is a spherical mirror?