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You are given an imaging system which consists of two thin transparencyes T1, T2 and two thin lenses L1, L2 arranged as shown in Figure A. The shapes and dimensions of T1, T2 are shown immediately below in Figure B. f2 Z T1 ] L1 T2 L2 Figure A (not to scale) T1 air glass, n =1.5 a=3cm 0.5um T2 air opaque glass, opaque n =1.5 X " b=7cm Figure B (not to scale) Transparency T1 is infinitely large in the x dimension. Lenses L1, L2 are identical, with infinitely large apertures and focal lengths f1 = f2 = 10cm. Numerical values for the symbols a, b denoting lateral feature sizes of T2 are defined in Figure B. The illumination is an on-axis plane wave at wavelength A = 1um. The observation plane is located one focal distance behind L2. 1.a) What is the intensity immediately after T1? 1.b) What is the optical field immediately before T2? 1.c) What is the intensity measured at the observation plane