MCQ questions for class 7 Science Chapter 15 Light
Question 1: What is the term for the ability of an object to allow light to pass through it?
Opaque
Transparent
Translucent
Reflective
Question 2: Which of the following is an example of a transparent object?
Wood
Aluminum foil
Glass
Cardboard
Question 3: What is the term for the bending of light when it passes from one medium to another?
Reflection
Refraction
Dispersion
Diffraction
Question 4: Which of the following is an example of a translucent object?
Wood
Aluminum foil
Glass
Cardboard
Question 5: What is the term for the bouncing back of light when it strikes a surface?
Reflection
Refraction
Dispersion
Diffraction
Question 6: Which of the following is an example of an opaque object?
Glass
Aluminum foil
Air
Wood
Question 7: What is the term for the spreading out of light into its constituent colors?
Reflection
Refraction
Dispersion
Diffraction
Question 8: Which of the following is an example of dispersion of light?
Formation of rainbow
Reflection of light
Refraction of light
Diffraction of light
Question 9: What is the term for the change in direction of light when it passes around the edge of an obstacle?
Reflection
Refraction
Dispersion
Diffraction
Question 10: Which of the following colors of light bends the least when passing through a glass prism?
Red
Green
Blue
Violet
Question 11: What is the term for a device that forms an image by the convergence or divergence of light rays?
Mirror
Lens
Prism
Filter
Question 12: Which of the following types of lenses converges light rays?
Convex lens
Concave lens
Plano-convex lens
Plano-concave lens
Question 13: What is the term for the lens that is thicker at the center than at the edges?
Convex lens
Concave lens
Plano-convex lens
Plano-concave lens
Question 14: Which of the following types of lenses diverges light rays?
Convex lens
Concave lens
Plano-convex lens
Plano-concave lens
Question 15: What is the term for the lens that is thinner at the center than at the edges?
Convex lens
Concave lens
Plano-convex lens
Plano-concave lens
Question 16: What is the term for the point where light rays parallel to the principal axis converge or appear to diverge?
Focal point
Principal focus
Optical center
Center of curvature
Question 17: Which of the following is the position where an object should be placed to get a real and inverted image by a convex lens?
At the focal point
Between the focal point and the lens
At the optical center
Beyond the optical center
Question 18: What is the term for the image formed by a convex lens that can be obtained on a screen?
Real image
Virtual image
Magnified image
Enlarged image
Question 19: Which of the following is the position where an object should be placed to get a virtual and erect image by a convex lens?
At the focal point
Between the focal point and the lens
At the optical center
Beyond the optical center
Question 20: What is the term for the image formed by a convex lens that cannot be obtained on a screen?
Real image
Virtual image
Magnified image
Enlarged image
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