I want to invest in mutual fund. Which fund can provide me more from my capital.?

Whether ETFs are a good idea or not depends on how you intend to invest. For example, let's say you're just starting out and plan to invest $100/month. And let's also say that you're account is with a low-fee brokerage like ScottTrade. With that, each $100 investment will cost you $7, or 7%. That's a loss of 7% right off the bat. If you're going to DCA (dollar cost average) small amounts over time, ETFs are definitely not going to be the way to go.

WallStreeter has it right in that higher reward also equals higher risk. For the past 3 years, emerging markets have been on a tear. Astounding increases over the past few years. For example, I hold a Latin America fund that's performed phenomenally in the past few years. Up 60% in 2006, 38% in 2004, and 58% in 2003. A couple of weeks ago, it was up year-to-date by over 37%. But in the past couple of weeks, it's dropped like a stone. That 37% gain has been cut to less than 19%, and it's still dropping. If you'd bought into the fund a couple of weeks ago, you might have fainted from the losses.

So basically, you have to learn about what you're buying. You can ask any question you like here, but if you don't do your own research, you're only going to get a partial story. Only you know your risk tolerance, so only you are going to know what's right for you.

Get an ETF Exchange Traded Fund -- Mutual funds usually charge higher fees and you cannot get out of them as easily if a moron is managing the fund. ETF's are traded just like a stock.

ETFs are a good choice and cheaper than vanguard options. If, however, you desire active mangement, use morning star to review the fund. HOWEVER, do not use the rating system (1 - 5 stars). Here is how to do it: look at the correlation of the fund to the benchmark (make sure they are appropriate) and if the fund has a high correlation then you can look at the alpha of the fund. A positive alpha says the fund manager has performed, on a risk adjusted basis, better than the market. Negative alpha is bad, positive is good.
Next, how long has the manager been there? Long enough for the numbers to be validated using this approach? If not, then the numbers could be no good again (as in the correlation is below 0.70 (r2 below 0.70).
Next, how did the fund perform during good and bad times...one year periods? What type of upside/downside did it provide.
And now you have an idea if the fund is worthwhile. The morning star rating puts emphasis on the returns without due process over how long the manager has been there or the correlation to the market or risk adjusted returns. Therefore, in good markets it rewards the high flying and often higher risk funds with the top 5 stars. But comparing a fund that returns well but does so at the expense of too much risk, is often not realized until it is too late (or you look at alpha). You might want to consider the sharpe ratio too.