Foco

The video explains how refraction and reflection affect image sharpness. It highlights that different wavelengths refract differently, causing lenses to struggle in focusing all colors at a single point, leading to a blur. In contrast, mirrors do not have this issue, maintaining image clarity.

What is the primary factor that determines where a sharp image is formed?

• The type of lens used

• The point of refraction or reflection

• The size of the object

• The distance from the light source

Why can't a lens focus all colors at the same point?

• Due to different wavelengths refracting differently

• Because lenses are imperfectly shaped

• Because lenses absorb some colors

• Due to the curvature of the lens

What is the result of a lens's inability to focus all colors at a single point?

• A color inversion

• A small blur

• A magnified image

• A sharp image

Which optical component does not suffer from the problem of color dispersion?

• Mirrors

• Filters

• Prisms

• Lenses

What is a key advantage of mirrors over lenses in terms of image clarity?

• Mirrors can be used in any lighting condition

• Mirrors do not experience color dispersion

• Mirrors are cheaper to produce

• Mirrors are lighter