Author Question: Star A has the peak of its blackbody radiation at lA. Star B has its peak at lB, which is one-third ... (Read 111 times)

pragya sharda · **on:** Jul 28, 2018

Star A has the peak of its blackbody radiation at lA. Star B has its peak at lB, which is one-third that of lA. If Star A's surface temperature is TA, how does the surface temperature TB of Star B compare?
a. TB = TA/9
c. TB = 9 TA
b. TB = 3 TA
d. TB = TA/3

Question 2

The ultraviolet catastrophe predicts that:
a. a black body can absorb an infinite amount of radiation if the radiation is in the ultraviolet region.
b. the radiated energy approaches zero as the wavelength approaches zero.
c. as an object gets hotter its light will change from dull red to blue white.
d. all objects should radiate extreme amounts of ultraviolet light.