Which of the following crystals are polished to act as the cut-off reflector? Options: A . &nbspQuartz B . &nbspBeryllium C . &nbspSilicon D . &nbspLithium

Which of the following crystals are polished to act as the cut-off reflector?

Question

Which of the following crystals are polished to act as the cut-off reflector?

Options:

A . Quartz

B . Beryllium

C . Silicon

D . Lithium

Answer: Option C
Answer: (c).Silicon

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