Refraction and Lenses Quiz

What is the primary function of a lens in terms of light behavior?

• To absorb light

• To reflect light

• To refract and focus light

• To emit light

How do converging lenses affect parallel incident rays?

• They diverge the rays

• They converge the rays to a point

• They reflect the rays

• They absorb the rays

What is a unique characteristic of a double convex lens?

• It is thinnest at the edges

• It is thickest at the edges

• It is symmetrical and converging

• It is asymmetrical and diverging

What is the principal axis of a lens?

• A diagonal line through the lens

• A horizontal line through the center of the lens

• A curved line through the lens

• A vertical line through the lens

What is the focal length of a lens?

• The distance from the principal axis to the edge of the lens

• The distance from the lens to the image

• The distance from the focal point to the vertical axis

• The distance from the lens to the object

What happens to a light ray traveling parallel to the principal axis in a converging lens?

• It refracts and passes through the focal point

• It reflects back

• It continues in a straight line

• It diverges away from the lens

Which rule of refraction is demonstrated when a light ray travels through the focal point on its way to a converging lens?

• It refracts and travels parallel to the principal axis

• It continues in a straight line

• It diverges away from the lens

• It reflects back

How do diverging lenses affect light rays traveling parallel to the principal axis?

• They converge the rays to a point

• They reflect the rays

• They refract the rays away from the principal axis

• They absorb the rays

What is the behavior of a light ray heading towards the center of a diverging lens?

• It refracts and continues along the same path

• It reflects back

• It converges to a point

• It diverges away from the lens

Where do the refracted rays intersect when extended backwards in a diverging lens?

• At the center of the lens

• At the principal axis

• At a point between the focal point and the lens surface

• At the focal point on the opposite side