Different types of sheets are placed between Nisha,
Sahil, Ankit and Ruby.
Sheets Q and S allow light to pass through them. Sheets
P and R are opaque. Select the incorrect statement
among the following.
A Nisha cannot see Sahil.
B Sahil can see Ankit.
C If sheet S is removed then Ruby cannot see
Ankit.
D Ankit can see Nisha.
Answer