electromagnetic Fast help

I NEED FAST HELP IN 4 ELECTROMAGNETIC QUESTUIONS EXACT AFTER 2 HRS 15 MINS FROM NOW. THERE WILL BE QUESTIONS FROM TWO CHAPTERS ONLY (1) WAVE RELECTION AND TRANSMISSION (2) WAVE PROPOGATION , HERE IS THE BOOK  https://drive.google.com/file/d/0B3YxnrV5g0J3bzhud3A1Rk1vaTA/view?usp=sharing 

I AM ATTACHING PRACTICE EXAM AND SOLUTION SO THAT U CAN CHECK 

ONCE I POST MAIN QUESTIONS THERE WILL ONLY BE 1 HR 20 MINS