Hello Aspirant,
A CGPA which can make you eligible for all companies is a good CGPA. In India and across the globe, hardly any company has an eligibility criteria of more than 8.5 CGPA.
You are in your 4th semester. If you even have a CGPA of 7.5 till now, you need not worry. You still have 4 semesters and these are the semesters where you will have to work hard. You can easily click 8.5–9.5 in these four semesters which will take your CGPA to a decent number at the end of your B.Tech.
All the best. Hope the answer helps.
Candidates can check B.Tech Cut off for Top IITs & NITs here.
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