heat can be produced using Sunrays by
A) Biconvex lens
B) Biconcave lens
C) A and B
D) Neither A and B
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Biconvex lens.......
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a kind of convex lens and concave lens heat accumulation solar energy generating set, the convex lens that comprise the focusing luminous energy of heat sink, steam turbine, generator, orientable sun-tracing, it is characterized in that, comprise that also be located on the convex lens can be with the concave mirror ...
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