Focus

What happens to light after it undergoes refraction or reflection?

• It remains unchanged.

• It converges and forms a sharp image.

• It splits into multiple beams.

• It diverges and forms a blurry image.

Why do lenses cause a slight blurring of images?

• Because they refract different wavelengths differently.

• Because they reflect all colors equally.

• Because they absorb some colors of light.

• Because they are made of transparent material.

How do different wavelengths of light affect the focus of a lens?

• Only red light is affected.

• Wavelengths do not affect the focus.

• Different wavelengths focus at different points.

• All wavelengths focus at the same point.

What is a key difference between mirrors and lenses regarding image clarity?

• Mirrors cause more blurring than lenses.

• Lenses do not cause any blurring.

• Mirrors do not have the problem of color blurring.

• Both mirrors and lenses have the same blurring issues.

Which optical device does not suffer from color blurring?

• Filters

• Mirrors

• Prisms

• Lenses