Date difference issue with relational operator

convert(varchar(25),startDate,105)<convert(varchar (25),getDate() ,105)

if the startDate = '26/11/2010' and getDate = '27/11/2010' - TRUE
if the startDate = '29/11/2010' and getDate = '28/11/2010' - FALSE

wherein with following dates, it returns - TRUE (ideally it should return FALSE)
if the startDate = '01/12/2010' and getDate = '30/11/2010'

Is this a date format issue..? If so, how to fix it ?

You are comparing charactervalues, not date/numeric values. < or > gives totally different results when you use charactervalues.
Why do you convert the startdate and enddate to a varchar before you compare them? Why not compare the datetime-values?

even I had faced this issue... n later came to know that the characters values was being compared which actually takes ascii values into consideration, in such case the comparision is totally incorrection.

But I still do not have solution if I just need to consider the date but not the timings. I remember the reason for which I used the convert function was to get rid of the timings and only to consider the date part.

If you only assign date-values to a datetime-variable, the time-part does not matter in the comparison.
If you have to datetimevariables, e.g. '3/1/2010 10:12:00' and '12/9/2011 08:30:03', you can convert the original value to char/varchar in the desired format (without the timepart) en then convert that value back to a datetime value.

Those two converted datetimevalues you can compare properly.

To truncate time from getdate() use

below query is not correct.

dateadd(dd, datediff(dd, '', getdate()), '')

Can any one please correct the same.

Thanks in advance!!

??
Can you explain what you mean/want?