Hello

Taking admission in Class 11 without a Class 10 marksheet is usually not possible, as the marksheet is the official proof that you've passed Class 10, which is a basic eligibility requirement. However, if your result is declared and you're just waiting for the physical marksheet, some schools may allow provisional admission based on your result or a digital copy. It’s best to talk directly to the school where you want admission  they might guide you with a temporary solution or let you submit the marksheet later.