hello kiran kumar,

the minimum age limit for jee mains is 17, this limit can extend upto 24 only.please refer given link to know the eligibility criteriae for jee mains 2019,

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

you can access it by copy and paste it in the url bar of your browser.

all the best!

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)