Optics -Multiple Choice Questions Quiz

Question 1: What is optics?

(a) The study of sound and its behavior
(b) The study of light and its behavior
(c) The study of electricity and magnetism
(d) The study of motion and forces

Question 2: What is the phenomenon of bending of light when it passes from one medium to another?

(a) Refraction
(b) Reflection
(c) Diffraction
(d) Dispersion

Question 3: Which optical component is used to separate white light into its component colors?

(a) Lens
(b) Prism
(c) Mirror
(d) Diffraction grating

Question 4: What type of mirror curves inward and is used to focus light at a specific point?

(a) Convex mirror
(b) Plane mirror
(c) Concave mirror
(d) Spherical mirror

Question 5: What type of lens curves inward and is thicker at the center than at the edges?

(a) Convex lens
(b) Plane lens
(c) Concave lens
(d) Spherical lens

Question 6: What is the focal length of a lens or mirror?

(a) The distance between the object and the lens
(b) The distance between the image and the lens
(c) The distance between the lens and the screen
(d) The distance between the center of the lens or mirror and its focal point

Question 7: What is the phenomenon of light waves spreading out as they pass through an opening or around an obstacle?

(a) Refraction
(b) Reflection
(c) Diffraction
(d) Dispersion

Question 8: What type of lens or mirror has a negative focal length?

(a) Convex lens or mirror
(b) Plane lens or mirror
(c) Concave lens or mirror
(d) Spherical lens or mirror

Question 9: What is the phenomenon where light waves from different sources combine to form regions of constructive and destructive interference?

(a) Refraction
(b) Diffraction
(c) Dispersion
(d) Interference

Question 10: Which optical phenomenon causes the apparent bending of a pencil when it is dipped into a glass of water?

(a) Refraction
(b) Reflection
(c) Diffraction
(d) Dispersion

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Total score: /10

Answer key:

Question 1: b

Question 2: a

Question 3: b

Question 4: c

Question 5: a

Question 6: d

Question 7: c

Question 8: c

Question 9: d

Question 10: a