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Spherical Mirrors: Focus and Focal Length

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Spherical Mirrors: Focus and Focal Length

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Questions and Answers

What is the point where light rays converge for a concave mirror referred to as?

Principal axis

Paraxial rays

Focal plane

Focal point (correct)

Which of the following best describes the focal length of a mirror?

Distance between the focus and the pole of the mirror (correct)

Distance between the focal plane and the mirror surface

Distance between the paraxial rays and the principal axis

Distance between the principal axis and the focus

What is the plane that passes through the focus and is perpendicular to the principal axis known as?

Axial plane

Principal plane

Focal plane (correct)

Marginal plane

Which type of rays fall close to the pole and make small angles with the principal axis?

Paraxial rays Signup and view all the answers

What happens to marginal rays in terms of their distance from the pole and angles with the principal axis?

They fall far away from the pole with small angles Signup and view all the answers

Why is the study restricted to paraxial rays in this chapter?

To simplify calculations due to their small angle approximations Signup and view all the answers

Spherical Mirrors: Focus and Focal Length

Choose a study mode

Podcast

Questions and Answers

What is the point where light rays converge for a concave mirror referred to as?

Which of the following best describes the focal length of a mirror?

What is the plane that passes through the focus and is perpendicular to the principal axis known as?

Which type of rays fall close to the pole and make small angles with the principal axis?

What happens to marginal rays in terms of their distance from the pole and angles with the principal axis?

Why is the study restricted to paraxial rays in this chapter?

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