DOUBTS IN F & O

HELLO ,
I HAVE SOME DOUBTS IN F&O, COULD U HELP ME,
MY DOUBTS R :

1. IF I BUY 1 CALL OPTION OF COMPANY A FOR 5 RS,CMP IS 40, STRIKE PRICE IS 50,AFTER SOME DAYS,
PRICE OF THE SHARE IS 45, IF I SELL CALL OPTION FOR RS 7.5-8.00, IS IT PROFITABLE? CAN V DO LIKE THIS?

2. AFTER STRIKE PRICE IS CROSSED , WHAT SHOULD V DO EITHER BUY & SELL LOT(S) SIZE SHRS R SELL CONTRACT @ HIGHER PRICE,
WHICH 1 IS BEST?

3. AFTER SOLD D CONTRACT ,I DON'T HAVE LOT SIZE SHRS, SUPPOSE D PERSON EXERCISE D OPTION WHICH I SOLD (NAKED POS),
WHAT WOULD HAPPEN?

THANK U

there are 3 option types

Out of money
At the money
in the money options

For your trade the Strike price is 50 , price of the stock is 40
so its an Out of money option.

If u had got that Call at 5 and if u exit at 8 ,you will be making 60% returns