1) 2) 3) DU MSc Physics Topic:- DU_J18_MSC_PHY_Topic01 [Question ID = 5127] 1. [Option ID = 20507] 2. [Option ID = 20505] 3. [Option ID = 20506] 4. [Option ID = 20508] Correct Answer :- [Option ID = 20505] [Question ID = 5148] 1. [Option ID = 20589] 2. [Option ID = 20592] 3. [Option ID = 20590] 4. [Option ID = 20591] Correct Answer :- [Option ID = 20591] [Question ID = 5159] 1. [Option ID = 20635] 2. [Option ID = 20633] 3. [Option ID = 20634] 4. [Option ID = 20636] Correct Answer :- [Option ID = 20635]