Optics: Lenses and Light Behavior Quiz

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Questions and Answers

What type of lens is thicker at the center compared to its edges?

Convex lens (correct)
Plano concave lens
Biconcave lens
Concave lens

How many times does a ray of light get refracted while passing through a lens?

Not at all
Three times
Twice (correct)
Once

Which lens is defined as having both spherical surfaces on the inside?

Plano convex lens
Biconvex lens
Concave lens (correct)
Convex meniscus lens

In what kind of application might you find a biconcave lens?

In optical instruments needing divergence (C) Signup and view all the answers

What is the correct term for the lens that is thicker at the edges compared to the center?

Concave lens (D) Signup and view all the answers

What does the principal focus of a convex lens represent?

The point where light rays meet after passing through the lens (D) Signup and view all the answers

Which of the following statements about the optical center is true?

Light rays passing through the optical center do not change their direction (D) Signup and view all the answers

What is the primary behavior of light rays when passing through a concave lens?

They diverge and appear to come from the focal point (A) Signup and view all the answers

What is the focal length of a lens?

The distance from the optical center to the focal point (C) Signup and view all the answers

In the experiment, what should be done after finding a clear image on the screen using a convex lens?

Reverse the position of the lens and repeat the measurements (C) Signup and view all the answers

Flashcards

Convex Lens

A transparent object with two spherical surfaces that bulge outwards, thicker in the middle than at the edges.

Concave Lens

A transparent object with two spherical surfaces that curve inwards, thinner in the middle than at the edges.

Lens Types

Various shapes of lenses include biconvex, plano-convex, biconcave, plano-concave, convex meniscus, and concave meniscus, each with unique optical properties.

Lens Sign Convention

A set of rules that determines whether an object's distance from the lens or the object's height is positive or negative. It determines the object's position.