Ared opaque object a. absorbs all colors of the visible spectrum equally. b. reflects red light only. c. absorbs red light only. d. reflects all colors of the visible spectrum but red.

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?