Atoms Class 12 MCQ Questions: In the 19th century, various evidence came up that supported the atomic hypothesis of matter. J. J. Thomson's 1897 experiments on electric discharge through gases ...
Magnetism and Matter Class 12 MCQ Questions: Chapter 5 of CBSE Class 12 Physics begins with a description of a bar magnet and its behaviour in an external magnetic field, it then goes on to describe ...
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