Which of the following statements about lenses is true?
Practice Questions
Q1
Which of the following statements about lenses is true?
Concave lenses converge light rays
Convex lenses diverge light rays
Concave lenses produce virtual images
Convex lenses have negative focal lengths
Questions & Step-by-Step Solutions
Which of the following statements about lenses is true?
Step 1: Understand what a lens is. A lens is a transparent object that bends light to form images.
Step 2: Know the types of lenses. There are two main types: concave lenses (curved inward) and convex lenses (curved outward).
Step 3: Learn about focal length. The focal length is the distance from the lens to the point where light rays converge or appear to diverge.
Step 4: Focus on concave lenses. Concave lenses always spread out light rays that pass through them.
Step 5: Remember the image characteristics of concave lenses. When an object is placed within the focal length of a concave lens, it always produces a virtual image.
Step 6: Define a virtual image. A virtual image is one that cannot be projected on a screen because the light rays do not actually converge.
Step 7: Conclude that the statement about concave lenses producing virtual images when the object is within the focal length is true.
