Understanding Convex Lenses

What type of lens is used to magnify objects that are close up?

• Concave lens

• Convex lens

• Cylindrical lens

• Plane lens

What happens to a ray of light that enters a convex lens at the center?

• It reflects back

• It bends upwards

• It bends downwards

• It continues in a straight line

When light rays enter a convex lens from different points, where do they converge?

• At the principal axis

• At the lens surface

• At the focal point

• Outside the lens

What determines the amount of convergence of light rays in a lens?

• The thickness of the lens edges

• The power of the lens

• The angle of incidence

• The color of the light

What does a shorter focal length indicate about a lens?

• Less powerful lens

• Older lens model

• More powerful lens

• Defective lens

In lens diagrams, what does a double-headed arrow typically represent?

• The principal axis

• A diverging lens

• A converging lens

• The direction of light

What is the principal axis in the context of lenses?

• The outer edge of the lens

• The line through the center of the lens

• The thickest part of the lens

• The focal point

What does the focal point 'F' represent in a lens diagram?

• The point where all light rays converge

• The edge of the lens

• The thickest part of the lens

• The point where light rays diverge

If an object is placed at a distance 'U' from a lens, where is the image formed?

• At distance 'V' on the same side

• At distance 'V' on the opposite side

• At the focal point

• At distance 'U' on the opposite side

What does a negative value of 'V' indicate about the image formed by a lens?

• The image is larger than the object

• The image is virtual and erect

• The image is real and inverted

• The image is smaller than the object