Hi Annette
Your tour manager will be Barbara Eastlake.
http://electricaloutlet.org/
It says: "A variety of electrical plugs are found throughout India, so an all-around adaptor plug set is recommended. Type D is most common. Some hotels have desks and workstations which accept a variety of plug types. But no matter what type of plug, voltage in India is 230V 50 Hz."
These sets are also known as universal or global adaptors and you will be able to use them on future holidays too.
As for money, bear in mind that most of your meals (apart from 6 lunches) and excursions are included so you won't need a lot of spending money. Personally, I would take about £250-300 in sterling and change into rupees at Delhi airport. I'd also take my cards and let the bank know I planned to use them in India - so if you do need a bit extra, you will be able to get it. India is very high-tec in some places now so you shouldn't have too much trouble withdrawing cash in the big cities.
Kind regards
Olly, your editor