strike price : strike price is nothing but related maket price particular script for an underlying assets .this strike prices set by the stock exchange .............. by , sumanth choudary

The strike price of a stock option, is a fixed price at which the owner of the stock can either buy or sell at. The strike price is a key variable in a derivatives contract between two people.

The strike price is the heart of the futures market. If you are dealing in puts, the strike price is the price below which the option exercises. If I sell a put on Acme at $10, I can be required to buy the security if it falls to $9.95. In calls, if the share price goes above the strike price the option exercises--if I sell a call on Acme at $10, the option executes if the share price hits $10.05.

I think it's the same

Nothing. Once you enter into a put contract, the strike price remains the same. If the stock price goes over the strike price and stays there until expiration, you just let the put expire.