Edits to “Statement”, “Answer”

smb_2_3 edited
revision #20260 parent #20259 ← older newer →
@@ -1,11 +1,13 @@
### Statement
−$13.4.7.$ [Insert the problem statement]
+$13.4.7.$ A beam of light of intensity I falls on a plane-parallel plate normal to its surface. Ignoring the absorption and assuming that the reflection coefficient of
+light on each surface of the plate in any direction is equal to k, determine the
+intensity of the beam that passed through it.
### Solution
#### Answer
−[Insert a concise answer or boxed result]
+$I_0=\frac{1-k}{1+k} I_0$