Light and Optics flashcards

0/23

23 cards remaining

Take the chapter practice test

All 23 cards in this deckShow

What is the normal?Reflection: A line perpendicular to a surface at the point of incidence.
What is the law of reflection?Reflection: Incident angle equals reflected angle from the normal.
What is specular reflection?Reflection: Orderly reflection from a smooth surface.
What is diffuse reflection?Reflection: Reflection scattered by differently oriented surface regions.
From what line are reflection angles measured?Reflection: The normal to the surface.
What is a virtual image?Reflection: An apparent origin found by extending rays backward.
Where is a plane mirror image?Reflection: Equally far behind the mirror as the object is in front.
What causes diffuse reflection?Reflection: Different local surface orientations scatter reflected rays.
What is refraction?Refraction: Change in wave direction at a boundary due to speed change.
What is refractive index?Refraction: n = c/v for light in a medium.
What stays fixed at a stationary boundary?Refraction: Frequency of the transmitted wave.
What is dispersion?Refraction: Wavelength-dependent refraction or speed.
What does refractive index compare?Refraction: Vacuum light speed to medium light speed.
What stays constant across a stationary optical boundary?Refraction: Frequency.
What conditions allow total internal reflection?Refraction: Higher-to-lower index and incidence above critical angle.
Which angle reference is used in Snell’s law?Refraction: The normal.
What does a diverging lens do to parallel rays?Mirrors and Lenses: Spreads them as if they came from a focal point.
What image does a diverging lens normally make of a real object?Mirrors and Lenses: Upright, reduced, virtual.
What does a convex mirror normally make?Mirrors and Lenses: Upright, reduced, virtual image.
Can a concave mirror make a real image?Mirrors and Lenses: Yes, for suitable object distances.
What does negative d_i mean here?Mirrors and Lenses: A virtual image on the object side.
What does negative magnification mean?Mirrors and Lenses: An inverted image.
What approximation supports the thin-lens relation?Mirrors and Lenses: A thin lens and paraxial rays.