Hey Rohit, You can go to following places for 1 day from Delhi. You have to start early morning. 1)Agra
2)Fatehpur Sikri
3)Bhangarh Fort
4)Jaipur
5)Mathura
6)Chandigarh Hope this helps.
One day sightseeing in Delhi
1. india gate
2. humayuns tomb
3. red fort
4. juma masjid
5. chandni chowk
6. qutub minar
7. lotus temple
8. akshardham
9. Delhi fort need not be in the same order, you can plan accordingly.
hope this helps
If you want to cover Delhi in one day, Best option is to book redBus for on day Delhi sightseeing tour. it costs around 280 ₹ p.p. they cover major destinations in a day.