The correct option is (a) 2.2 x 108 Pa
Explanation:
We have change in length due to the change in temperature (considering no obstruction)
ΔL= αLΔT
or
ΔL= 1.1 x 10-5 x 0.10 x 100 = 1.1 x 10-4 m
Now pressure which needs to be applied would be given using
F/A = Pressure = (ΔL x Y)/L = (1.1 x 10-4 x 2 x 1011)/0.1
(Here ΔL is the expansion prevented)
= 2.2 x 108 Pa