"""Which of the following test can be used to distinguish between <img src=""""https://d10lpgp6xz60nq.cloudfront.net/physics_images/DIN_OBJ_CHM_V03_C17_E01_025_Q01.png"""" width=""""80%"""">  and <img src=""""https://d10lpgp6xz60nq.cloudfront.net/physics_images/DIN_OBJ_CHM_V03_C17_E01_025_Q02.png"""" width=""""80%""""> ?"""
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