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Questions and Answers
What happens to the focal length of a converging lens as the refractive index of the lens material increases?
What happens to the focal length of a converging lens as the refractive index of the lens material increases?
- It becomes negative
- It increases (correct)
- It remains unchanged
- It decreases
What effect does increasing the distance between an object and a convex lens have on the size of the image formed?
What effect does increasing the distance between an object and a convex lens have on the size of the image formed?
- The size of the image remains unchanged
- The image becomes blurred
- The size of the image decreases
- The size of the image increases (correct)
In which situation would a concave lens produce a virtual image?
In which situation would a concave lens produce a virtual image?
- When the object is located between the focal point and the lens
- When the object is located at the center of curvature of the lens
- When the object is located beyond twice the focal length of the lens (correct)
- When the object is located at infinity
Which type of mirror can always produce a magnified virtual image of an object?
Which type of mirror can always produce a magnified virtual image of an object?
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