1.
A) The filament is heated until it glows, producing light. B) Phosphors absorb ultraviolet light from gas molecules and begin to glow. C) The gas inside it is heated until it glows, producing light. D) Electrons collide with the gas molecules inside it and produce visible light. 2.
A) twice as great as B) less than C) greater than D) the same as 3.
A) olfactory B) cone C) sclera D) conjunctiva 4.
A) violet B) yellow C) red D) blue 5.
A) gives off light when phosphors absorb ultraviolet radiation B) contains argon gas at low pressure C) gives off light when tungsten filament is heated D) uses the least amount of electricity to produce light 6.
A) All colors of visible light pass through the filter and enter the camera lens. B) Blue light is transmitted by the filter to the camera, and other colors of light are absorbed by the filter. C) Blue light is reflected by the filter away from the camera, and the other colors of visible light enter the camera. D) Blue light is absorbed by the filter, and the other colors of visible light enter the camera lens. 7.
A) rod B) blue cone C) red cone D) green cone 8.
A) the index of refraction of the object B) the index of diffraction of the object C) the wavelength of light it reflects D) the wavelength of light it absorbs 9.
A) regular reflection B) irregular reflection C) diffuse reflection D) refraction 10.
A) density B) index of diffusion C) index of refraction D) wave index 11.
A) reflects B) diffracts C) refracts D) diffuses 12.
A) reflected B) polarized C) diffused D) refracted 13.
A) Transparent B) Opaque C) Clear D) Translucent 14.
A) Shorter wavelengths cannot pass through a prism. B) Longer wavelengths are refracted more by a prism than shorter wavelengths. C) Longer wavelengths are refracted less by a prism than shorter wavelengths. D) Longer wavelengths cannot pass through a prism. 15.
A) retina B) pupil C) lens D) iris 16.
A) translucent B) transparent C) opaque D) reflective 17.
A) the more the light passing through is refracted B) the less the angle of incidence of light passing through them C) the less the light passing through is refracted D) the greater the angle of incidence of light passing through them 18.
A) opaque glass fibers B) coherent beams C) transparent glass fibers D) filters acting as parallel slits 19.
A) prism B) filter C) pigment D) laser 20.
A) Compact B) Coherent C) Incoherent D) Incandescent
.
