WBJEE 2021 Physics and Chemistry Solved Paper
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PHYSICS
CATEGORY - I (Q1 to Q30)
Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.
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Question : 29 of 80
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A 12.5 ev electron beam is used to bombard gaseous hydrogen at ground state. The energy level upto which the hydrogen atoms would be excited is
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