Hi

No, there will be no problem in JEE main and JEE advanced examination even if there is gap of 4 years between your class 10th and 12th. To be eligible for JEE main and advanced examination what matters is just your class 12th qualification, gap years won't affect at all.

For your reference JEE main and advanced eligibility criteria is provided below:-

JEE MAIN

Eligibility criteria says that:-

-) Qualification required :- to be eligible  for JEE mains  for BE or Btech you need 10+2/equivalent qualification with Physics,  mathematics as compulsory subject along with anyone of Chemistry or Biology or Biotechnology or Technical Vocational Subject.

-) Passing year :- one is eligible for JEE main examination for consecutive three years starting from the year of appearing for 12th /equivalent examination i. e to be eligible  for JEE mains 2021 you should be either appearing for 12th board exam or equivalent  in 2021 or should have passed it in 2020 or 2019

-) There is no age limit to be eligible

-) there is no minimum percentage requirement to be eligible for JEE Mains, you just need to have passed your 12th

But yes,

To be eligible for NITs, IIITs, CFTIs one needs at least 75% marks in class 12th if belongs to General or OBC category  or at least 65% marks in class 12th if belongs to Sc or St category. For this year i. e 2021 this minimum percentage requirement of 75% - 65 % has been lifted off.

For detailed information about jee main eligibility criteria  go through our page, the link for which is provided below

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

JEE ADVANCED

To be eligible for jee advanced

-) you need to pass your class 12th with at least 75% marks in aggregate in class 12 if belong to general or obc category or at least 65% marks if belongs to SC/ST or must be in the top 20 percentile in class 12 examination. For this year i. e 2021 this percentage requirement in class 12th has been lifted off.

-) You can give JEE advanced examination for the maximum of consecutive 2 years starting from the year of appearing for your 12th examination i. e to be eligible for JEE advanced 2021 your 12th board examination appearing year should be either 2021 or 2020 .

-) There is upper age limit, according to which to be eligible for jee advanced 2021,you should be born on or after 1st October 1996

-) you must qualify JEE mains to be eligible for jee advanced

You can get the detailed below information about jee advanced eligibility criteria by visiting our page the link for the same is provided below

https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

Thank you