Author Question: Dispersion occurs when: a. a material changes some frequencies more than others. b. a material ... (Read 25 times)

acc299 · **on:** Jul 28, 2018

Dispersion occurs when:
a. a material changes some frequencies more than others.
b. a material slows down some wavelengths more than others.
c. some materials bend light more than other materials.
d. light has different speeds in different materials.

Question 2

At 20C an aluminum ring has an inner diameter of 5.000 cm, and a brass rod has a diameter of 5.020 cm. Keeping the brass rod at 20C, which of the following temperatures of the ring will allow the ring to just slip over the brass rod? (aAl = 2.4 10-5 /C, abrass = 1.9 10-5/C )
a. 111C
c. 228C
b. 187C
d. 437C