Interests vary. Chose something you are interested in.
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With a simple online search you can find out the technical topics for your presentation. This is a good way to find a topic and get started on your paper.
Paper presentation topics for be first year student of physics department?
yes i want a paper presentation topics in wireless communication
Fu
Yes
present topics on power system
yes
Search for Paper presentation topics from Worlds Top 100 Universities websites for Web information PPT, DOC, PDF on FileDigg Education. http://education.filedigg.com
Recent paper presentation topics on information security include: NSA collecting millions of faces on the web and Understanding Information Security. Presentations on encryption is also a big topic.
http://edufive.com/presentationtopics/instrumentation.html see this
Thousand of topic ideas are available on net.