Blue light will not eject electrons from a certain metal; however, which one of the following may possibly eject electrons from that metal?
a. red
c. infrared
b. green
d. ultraviolet
Question 2
If a blackbody is at 2000 C, what will be the peak wavelength emitted?
a. 1.67 mm
c. 0.679 mm
b. 1.28 mm
d. 1.45 mm