Geometrical Optics Quiz

What is the phenomenon called when light falls on a flat surface and the angle of incidence equals the angle of reflection?

• Interference

• Refraction

• Diffraction

• Diffuse reflection

What type of image is formed when looking at an object in the mirror?

• Inverted image

• Enlarged image

• Virtual image

• Real image

What is the focal length of a convex mirror?

• fR=+

• fR=-

• R/2

• fR

What type of image is formed by a concave mirror when the object is far away?

• Inverted

• Enlarged

• Real and inverted

• Virtual and upright

What is the focal length of a concave mirror?

• fR

• fR=+

• R/2

• fR=-

What type of lens focuses a beam of parallel rays to a single point?

• Divergent lens

• Bi-concave lens

• Concave lens

• Convex lens

What is the focal length of a concave lens?

• fR=+

• fR=-

• fR

• R/2

What is the total diopter of a lens if the refractive index of the glass is n?

• (1/n) * (1/n)

• (1/n) - (1/n)

• (1/n) + (1/n)

• (1/n) / (1/n)

What is the magnification factor for an optical system?

• D / (D + nR)

• D / (D - nR)

• D / (D + nR)

• D / (D - nR)

What is the phenomenon called when rays crossing different parts of the lens do not reach exactly the same focus?

• Refraction

• Interference

• Diffraction

• Spherical aberration