MCQ questions for class 8 Science Chapter 16 Light
Question 1: What is the term for the property of light that makes it change direction when it passes from one medium to another?
Reflection
Refraction
Dispersion
Absorption
Question 2: Which of the following is a transparent medium?
Wood
Paper
Air
Metal
Question 3: What is the term for the bending of light when it passes from one medium to another?
Reflection
Refraction
Dispersion
Absorption
Question 4: Which of the following colors of light bends the most during refraction?
Red
Blue
Green
Yellow
Question 5: What is the term for the separation of light into its component colors?
Reflection
Refraction
Dispersion
Absorption
Question 6: What is the term for the change in the direction of a light wave when it passes through a prism?
Reflection
Refraction
Dispersion
Absorption
Question 7: Which of the following is a device that forms a spectrum of light by dispersing it?
Mirror
Lens
Prism
Filter
Question 8: What is the term for the bending of light as it passes through a lens?
Reflection
Refraction
Dispersion
Absorption
Question 9: Which of the following lenses is thicker at the center than at the edges?
Concave lens
Convex lens
Biconcave lens
Biconvex lens
Question 10: What is the term for a lens that converges light rays?
Concave lens
Convex lens
Biconcave lens
Biconvex lens
Question 11: Which of the following lenses is thinner at the center than at the edges?
Concave lens
Convex lens
Biconcave lens
Biconvex lens
Question 12: What is the term for a lens that diverges light rays?
Concave lens
Convex lens
Biconcave lens
Biconvex lens
Question 13: Which of the following is a virtual image formed by a convex lens?
Real image
Inverted image
Enlarged image
Upright image
Question 14: What is the term for an image formed by the actual intersection of light rays?
Virtual image
Inverted image
Real image
Upright image
Question 15: Which of the following is a characteristic of a concave lens?
Converging lens
Diverging lens
Biconvex lens
Plano-convex lens
Question 16: What is the term for the point at which all the incident rays parallel to the principal axis converge or appear to diverge after passing through a lens?
Focus
Focal length
Center of curvature
Aperture
Question 17: Which of the following colors of light deviates the least during dispersion?
Red
Blue
Green
Yellow
Question 18: What is the term for the distance between the optical center of a lens and its focus?
Focal length
Center of curvature
Radius of curvature
Aperture
Question 19: Which of the following is the unit of power of a lens?
Diopter
Candela
Lumen
Watt
Question 20: What is the term for a lens that is thinner at the center than at the edges?
Concave lens
Convex lens
Biconcave lens
Biconvex lens
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