Options are a form of derivative securities. The biggest advantage of options for the retail trader is the ability to trade in markets with a limited amount of investment capital. This advantage can quickly turn into a disadvantage for the under-funded or inexperienced trader. A few bad trades could deplete a small account because of the high leverage provided.
One of the most attractive aspects of options (as well as one of the most dangerous) is that they can provide you with the ability to greatly leverage your money. This is because with an options contract, you can - in effect - control a fairly large amount of underlying value with a relatively small amount of capital.
With the Nifty at 5650, a call option of 5700 strike price is available at 78. The option is available at just 1.3% of the price of the underlying contract. Compare this with the 20% margin required to buy the futures. Traders are attracted to options because of the high leverage provided. But, there is the other side. Option values are affected by Time Decay, Volatility and of course, by the change of price in the underlying. These are complex factors, that can make the option far more riskier than the 1.3% cost.
This post is not written to provide you with a primer on options. Most readers are well aware of the options environment. The Internet will provide you with as much information as you want. The post is to warn you that there is no such thing as a free lunch. Traders should understand the risks of options clearly when trading in them.