PhySci Chapter 20 Question Preview (ID: 42529)


PhySci Chapter 20. TEACHERS: click here for quick copy question ID numbers.

the metric unit of light intensity
a) candela
b) focal length
c) normal
d) refraction

the distance from a lens to its principle focus (the point at which all the rays converge)
a) focal length
b) lens
c) real image
d) virtual image

an object that reflects light rays
a) illuminated
b) luminous
c) candela
d) reflection

the measure of how bright the light from a light source is
a) intensity
b) focal length
c) normal
d) candela

the angle of incidence must be equal to the angle of reflection
a) law of reflection
b) law of refraction
c) focal length
d) intensity

a transparent object that uses the property of refraction to magnify or reduce images
a) lens
b) light
c) real image
d) virtual image

electromagnetic radiation of any wavelength, usually used in relation to the visible portion of the spectrum
a) light
b) intensity
c) candela
d) reflection

an object that emits light waves
a) luminous
b) illuminated
c) real image
d) virtual image

an imaginary line drawn perpendicular to the surface of a mirror or transparent substance through which light travels
a) normal
b) focal point
c) real image
d) virtual image

an image produced in front of a mirror
a) real image
b) virtual image
c) reflection
d) refraction

the return of waves after they strike a surface
a) reflection
b) refraction
c) intensity
d) light

the bending of waves as they pass from one medium into another
a) refraction
b) reflection
c) intensity
d) light

the image that appears to exist beyond a mirror
a) virtual image
b) real image
c) reflection
d) refraction

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