click below
click below
Normal Size Small Size show me how
Chapter 29
Reflection and Refraction
Question | Answer |
---|---|
the law of reflection states that________________ and __________________ are equal to each other | angle of reflection; angle of incidence |
a line drawn perpendicular to the point where the incident ray strikes the barrier is called a normal and is drawn as a __________ line | dashed |
the angle formed between the ___________ ray and the normalis called the angle of incidence | incident |
the angle formed between the reflected ray and the normal is called the ______________________________ | angle of reflection |
a bathroom and dressing room mirror are examples of a____________ mirror | plane |
convex mirrors curve __________________ | outward |
______________ mirrors curve inward | concave |
virtual images in mirrors are images that seem to be in or ____________________________ | behind the mirror |
real images are always _________________ | inverted |
whether a surface is a dissfuse reflector or a polished reflector depends on the wavelength of the waves it ________________ | reflects |
sounds energy not reflected is__________________ or _____________________ | absorbed; transmitted |
more sounds energy is reflected from a rigid and smooth surface than from a __________ and _____________ surface | soft; irregular |
in the desing of an auditorium or concert hall, a balance between reverberation and absorption is _________________ | desired |
_____________ _______________ is the reflection of a light from a rough surface | diffuse reflection |
a smooth mirror is only reflected in one direction, an _____________ pattern | orderly |