Question

I have taken physical as an additional subject will my percentages increase

Answer 1

Yes it will increase your per cent. .............

Answer 2

Dude...

Taking Additional Subject helps you if you get low marks in any primary subject...

I mean, Take for Example..

You Got 67/90 In chemistry
and You Got 77/90 In Physical or Computer...

Then The Additional Subject's Marks will be used to calculate the Overall Percentage of your Result.

Hope it helps...