44C i think. Do you have options for the answer?
Answer:
Angular spread, 
Explanation:
It is given that,
Wavelength of the light, 
Diameter of the telescope, D = 5.08 m
The minimum angular spread is given by :



So, the minimum angular spread of the beam is
. Hence, this is the required solution.
A. The metal shield will heat up, and then heat the air on the student's side of the shield.
The return of a wave back to its original medium is called an reflection