Does 1080p look bad on a 4k monitor?

Related questions

1. What is a QHD monitor?
2. Which display is better for eyes?
3. Can the eye see 4k?
4. Is 4k noticeable on a laptop?
5. What is the best size 1080p monitor?
6. Do you need 4k monitor for photo editing?
7. Is there a visible difference between 1080p and 4k?
8. Can you notice the difference between 1080p and 1440p?
9. Does 1080p upscaled to 4k look better?
10. Which is better UHD or FHD?

Tags

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2. #appreciably
3. #doesn
4. #great
5. #1080p
6. #however
7. #scaling
8. #technology
9. #although
10. #screens
11. #better
12. #looks
13. #scaler
14. #built
15. #because
16. #upscaling
17. #content