1) As with all waves___ of light as it passes through a hole or slit is observable only when the width of the opening is not too much larger than the wavelength of the light

-reflection

-diffraction

-polarization

-diffuse reflection

2) Everything around you, as well as your own body is constantly emitting electromagnetic radiation. At normal room temp, mostly ___ radiation is emitted

-FM

-X-RAY

-Ultraviolet

-infrared

3) The amount of energy in each quantum of light depends on the ___

-volume

-density

-frequency

-voltage