Is UK visa is valid for switzerland if somebody is going to visit husband for one month and passport is indian

Be careful - No! A UK visa is only valid for the UK. I think you may be thinking about the "Schengen" visa which covers many European states - but not Switzerland. Switzerland is a "neutral" country which does not align itself with anyone or anything. So an Indian Passport holder will need a visa.

may be

no it isnt

No UK visa is not vaild for Switzerland ,you have to get a seperate visa for sure.

Check out the link below, you will get all the required information:
http://www.eda.admin.ch/india_dlh/e/home...

Not at all for sure, u need either seprate Switzerland Visa or Schengen Visa which again comes with a time limit so u need to go and come back from any Schengen country within that time limit :)
- I know Consultae rules suck, thanks to Osama :)

No....you are definetly need the Swiss Visa only. Both UK & Schengen Visas is invalid to enter Switzerland. You may ask your husband apply for the invitation letter from Police Office at his village or town as the gauranter, then it will be easy for you to get the visa from Swiss Embassy. Otherwise you have to show your bank statement once you apply it without an invitation letter.
Good luck and have a good holiday.