Without knowing the specific brand, I'd have to say no. Most plant lights don't emit any UVB at all. And the ones that do often have the UVB rays dissipate after 3"-6". There was a website posted here, I think, that tested numerous bulbs for UVB output. The results were generally bad. Zoo Med's Reptisun scored the best in their testing.
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1.0 Common Snapping Turtle (Goliath)
1.0 Brown Anole (Anubis)
1.0 Green Anole (Baal)
1.1 Great Basin Collared Lizards (Amon, Amaunette)
0.1 Chilean Rose Hair Tarantula (Spiega)
1.0 Chesapeake Bay Retriever (Logan)
0.1 Spoiled Mutt (Storm)