Is wudoo’ invalidated if a man sees the ‘awrah of his wife?

Wudoo’ is not invalidated by that. We have already listed, in
the answer to question no.
14321, the things
that invalidate wudoo’. A man’s seeing his own ‘awrah or that of someone
else is not one of them. 

The Standing Committee was asked (5/270): is wudoo’
invalidated simply by looking at naked men and women, and is wudoo’
invalidated if a man looks at his own ‘awrah? They replied: 

Wudoo’ is not invalidated simply by looking at naked men and
women, or by looking at one’s own ‘awrah, because there is no evidence to
that effect. 

They were also asked (5/283): can a Muslim touch the Mus-haf or pray if he has looked at his own ‘awrah when he was doing wudoo’? They replied: Yes, looking at the ‘awrah is not one of the things that invalidate wudoo’.