Hey there
As admission in IET Lucknow is through upsee so the minimum percentage required is 45% in aggregate in the three subjects including physics and maths as compulsory. As you have aggregate more than 45% so you are eligible for the admissions.
Check the eligibility of upsee
https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/upsee-eligibility-criteria/amp&ved=2ahUKEwjcuLLVtv3kAhWfH7cAHZGADCsQFjAAegQIAxAB&usg=AOvVaw3AnNbI2eO_vkWXZhWkV9Yy&cf=1
Good luck
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