Which statement is always true?

Question

Lenses block all light to protect the eyes.

Lenses reflect light at the same angle the light comes in.

Lenses allow only one color through to the other side.

Lenses bend light to make an image of an object appear larger or smaller.

Answer 1

The statement that is always true is:

Lenses bend light to make an image of an object appear larger or smaller.

This describes the fundamental property of lenses, which can converge or diverge light beams, thereby magnifying or reducing the size of objects in the resulting image. The other statements are not universally true. For example:

• Lenses do not block all light; they can transmit light.
• Lenses do not necessarily reflect light at the same angle, as their primary function is refraction, not reflection.
• Lenses do not allow only one color through; they can transmit multiple colors depending on their design and material.