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Fundamentals of Optics

Optics

A collection of basic questions covering key concepts in optics relevant to high school physics curricula.

physics light reflection refraction lenses

15 Questions Easy Ages 14+ Aug 31, 2026

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About this Study Set

This study set covers Optics through 15 practice questions. A collection of basic questions covering key concepts in optics relevant to high school physics curricula. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 15 questions from the Fundamentals of Optics study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the phenomenon where light bounces off a surface called?

A Refraction
B Diffraction
C Reflection
D Dispersion

2 When light passes from one medium to another and bends, this is known as:

A Reflection
B Scattering
C Interference
D Refraction

3 Which type of mirror always produces a virtual, upright, and diminished image?

A Concave mirror
B Plane mirror
C Convex mirror
D Curved mirror

4 A convex lens is also known as a:

A Diverging lens
B Converging lens
C Magnifying glass
D Prism

5 What is the splitting of white light into its constituent colours called?

A Polarization
B Interference
C Dispersion
D Diffraction

6 The speed of light in a vacuum is approximately:

A 3 x 10^8 m/s
B 3 x 10^6 m/s
C 3 x 10^10 m/s
D 3 x 10^4 m/s

7 According to the law of reflection, the angle of incidence is:

A Equal to the angle of refraction
B Equal to the angle of reflection
C Twice the angle of reflection
D Half the angle of reflection

8 A concave mirror can form both real and virtual images. What type of image is formed if the object is placed beyond the focal point?

A Virtual and inverted
B Virtual and upright
C Real and inverted
D Real and upright

9 Which optical instrument uses lenses to magnify distant objects?

A Microscope
B Telescope
C Periscope
D Camera

10 What property of light explains why a rainbow forms?

A Reflection
B Refraction
C Diffraction
D Dispersion

11 What is the point where parallel rays of light converge after passing through a convex lens called?

A Optical center
B Focal point
C Vertex
D Principal axis

12 Light travels fastest in which of these mediums?

A Water
B Glass
C Air
D Vacuum

13 The bending of light as it passes through small openings or around obstacles is called:

A Interference
B Diffraction
C Polarization
D Scattering

14 A concave lens is also known as a:

A Converging lens
B Magnifying lens
C Diverging lens
D Focusing lens

15 When light waves from two sources overlap and combine, this phenomenon is known as:

A Diffraction
B Dispersion
C Interference
D Reflection

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