Concave Lens Part 1 Quiz

Concave Lens Part 1 Quiz connects optics with an unusual historical fact. In the 1400s, concave lenses were used in spectacles for people suffering from myopia, or short-sightedness. Before their invention, many scholars and craftsmen struggled with blurred vision, often ending their work early in life due to poor eyesight. The arrival of concave lenses gave them the ability to read and write comfortably again, extending their intellectual and creative contributions. It is fascinating to see how a simple transparent curve of glass could reshape daily living and academic progress centuries ago. This trivia on concave lens is a reminder of its importance, and the quiz includes topics like focal length, principal axis, and concave lens MCQ for practice.

Which type of lens is a concave lens?

Converging lens

Cylindrical lens

Diverging lens

Plano-convex lens

What shape does a concave lens have?

Thicker at the edges

Thicker at the center

Uniform thickness

Prism-like shape

What type of image does a concave lens always form for real objects?

Real and inverted

Magnified and real

Real and diminished

Virtual and upright

Where do the rays appear to meet after passing through a concave lens?

In front of the lens

Behind the lens

At infinity

On the optical center

What is the principal axis of a lens?

The edge of the lens

The border of curvature

Axis perpendicular to focal point

Line passing through its optical center

What is the focal length of a concave lens?

Distance between optical center and virtual focus

Distance between optical center and real focus

Radius of curvature

Twice the radius of curvature

If parallel rays fall on a concave lens, how are they refracted?

They converge at the focus

They remain parallel

They bend at 90°

They diverge outward

Which sign convention is used for the focal length of a concave lens?

Always positive

Always negative

Zero

Cannot be determined

What kind of image does a concave lens form irrespective of object position?

Always real and magnified

Always real and diminished

Always virtual and inverted

Always virtual and diminished

What is the power of a concave lens is expressed in?

Diopters

Joules

Watts

Newtons

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Sample Questions from This Quiz

Which type of lens is a concave lens?
What shape does a concave lens have?
What type of image does a concave lens always form for real objects?
Where do the rays appear to meet after passing through a concave lens?
What is the principal axis of a lens?

Try the full quiz and see how many of these you can answer!

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